Duplex apartment in Antwerp by Studio Okami

Building design
Bram Van Cauter from Studio Okami has built a maisonette apartment in the concrete Riverside Tower in Antwerp. Photo: Olmo Peeters

Bram Van Cauter's duplex apartment celebrates concrete as a building material. Photo: Olmo Peeters

The Riverside Tower is a brutalist landmark in Antwerp. Bram Van Cauter, founder of Studio Okami, has converted a maisonette apartment in the concrete tower on the banks of the Scheldt. Whereby “extending” here can also be understood as “tearing out”.

The Riverside Tower is a brutalist landmark in Antwerp. Bram Van Cauter, founder of Studio Okami, has converted a maisonette apartment in the concrete tower on the banks of the Scheldt. Whereby “extending” here can also be understood as “tearing out”.

The address is sought-after: the Riverside Tower is Antwerp’s tallest residential building. A few years ago, architect Glenn Sestig designed a much-publicized penthouse there for fashion designer Pieter Mulier. Now Studio Okami has developed a maisonette apartment that celebrates concrete as a building material.

The 71-metre-high residential tower is located opposite the historic old town on the banks of the Scheldt. It was built by two of the most renowned Belgian architects of the post-war period – Paul De Mayer and León Stynen. Both created major works of brutalism in Flanders. The Riverside Tower, completed in 1972, is also one of them. Only the 13th and 14th floors of the 20-storey tower house maisonette apartments. Bram Van Cauter, one of the two founders of Studio Okami, has now converted one of these two-storey apartments for himself and his family.

Bare concrete in the maisonette apartment

Van Cauter and his office partner Hans Vanassche had actually purchased new office space for Studio Okami on the 10th floor of the Riverside Tower. The seller then offered them the maisonette apartment on the 13th floor and De Cauter accepted. He then completely gutted the 230 square meter maisonette apartment and tore out all the wall, floor and ceiling coverings until only the bare concrete remained. Where the walls and ceilings were not completely removed, they were broken through extensively. Remaining wall sections thus function as balustrades or frame views within the apartment. In this way, the concrete retains its presence in the apartment despite the almost completely open floor plan. Finally, the concrete was sandblasted. The cleanliness of the surface now stands in exciting contrast to its roughness.

The largest room in the new floor plan is a double-height dining room, which flows openly into the spacious kitchen on the lower floor. In addition to a WC, these two functions take up the entire area of the apartment on the 13th floor. On the upper, 14th floor, the bedroom opens onto the hall in the form of a gallery. In contrast to the floor below, the apartment here extends over the entire depth of the Riverside Tower. As a result, the maisonette apartment on the 14th floor has roughly twice the floor space of the floor below. Studio Okami then used these additional square meters for a living room and a study. These two rooms offer a particularly charming view over the Scheldt to Antwerp’s old town. The partition wall between these two rooms has also been removed except for a knee-high section.

Fixtures in blue

While the architects from Studio Okami generously removed old features from the apartment in the Riverside Tower, they were sparing in adding new ones. The most striking addition is a light blue spiral staircase with an attached walkway. The new staircase forms the only connection between the two floors inside the apartment. Also added is a large built-in unit in the center of the upper of the two residential floors. It mainly accommodates a bathroom, a WC and storage space. Studio Okami has painted the side of the built-in unit facing the study and living room a bright blue. The other sides, on the other hand, are in a delicate shade of caramel, which is also the color of the new floor in the apartment. The bathroom in the interior of the built-in unit is also completely in this color. Special lighting effects are created by the fact that the installation does not extend to the ceiling. It ends at the level of the joists. In this way, the wall color of the illuminated bathroom reflects into the living rooms of the maisonette apartment in the dark.

Guests live in the gallery

There is no guest room in the converted duplex apartment. There is a reason for this: Bram Van Couter and his wife Doris were able to purchase a second duplex apartment in the Riverside Tower at the same time. This is now not only home to Doris Van Couter’s art gallery (coming soon). The second maisonette also houses a Bed & Breakfast, which is also available as guest accommodation for friends and family of the Van Couter couple. Guests can discover that the Riverside Tower has already anticipated many of the features that characterize co-housing projects today. In addition to communal facilities such as a laundry room and a car wash station, there is also a communal garden and a lobby with a lounge area.

Maisonette apartment: kitchen in Judd design

For the new stainless steel kitchen, Studio Okami was inspired by the works of artist Donald Judd. The main component is a huge square kitchen island that complements a cupboard element. Due to the open room structure, the kitchen was to have a sculptural effect when not in use. At the same time, it had to provide all the comfort and functions required for sophisticated cooking. Incidentally, a particular challenge with all the new fixtures and fittings was that they had to fit into the building’s elevators. This was the only way to get all parts of the furnishings to the 13th and 14th floors. The minimalism that Studio Okami displayed when redesigning the maisonette apartment in the Riverside Tower also had very practical reasons.

In Antwerp, Atelier Kempe Thill and RE-ST also converted the “De Harmonie” concert hall. Read more here.

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Large Landscape Gardens: Fundamentals, History, and Significance

Building design
A landscaped garden and park complex designed around the theme of the Grand Landscape Garden
A street with flowers planted along a concrete wall—an example of urban greening. Photo: rumanamin/Unsplash

Anyone who enters a large landscape garden experiences nature as a work of art: vast lawns that gently give way to groups of trees, winding paths that continually draw the eye in new directions, bodies of water that reflect the sky, and sightlines that stretch across hills and valleys. The large landscape garden is one of the most influential inventions in European garden design—a design philosophy that, since the 18th century, has fundamentally redefined the relationship between people, nature, and space, and continues to shape open-space planning to this day.

  • What defines a grand landscape garden and how it differs from other types of gardens
  • How the landscape garden emerged historically and which intellectual movements shaped it
  • Which design principles and design elements underlie the landscape garden
  • What plant selection and vegetation techniques are characteristic of large-scale landscape gardens
  • How care, maintenance, and historic preservation are organized for historic landscapes
  • The significance of the landscape garden for contemporary urban development and open-space planning
  • What common misunderstandings and mistakes occur in planning and maintenance
  • How large-scale landscape gardens are being reevaluated in the context of climate adaptation and biodiversity

Definition and Classification: What Is a Large Landscape Garden?

The large landscape garden, known in English-speaking countries as a “landscape garden” or “English landscape garden,” is a type of open space that deliberately eschews the formal, geometric garden design of the Baroque and Renaissance periods and instead takes an idealized natural landscape as its design basis. It is characterized by meandering paths and shorelines, freely shaped bodies of water, irregularly arranged groups of trees and shrubs, expansive lawns, and a carefully staged sequence of spatial impressions. The word “large” refers not only to the area—which in fact often spans several hundred to over a thousand hectares—but also to the conceptual aspiration: the garden as a reflection of a complete, internally coherent landscape.

The large landscape garden differs fundamentally from the Baroque palace garden in its design logic. While the Baroque garden controls and organizes nature through symmetry, axes, parterres, and topiary (the pruning of trees and shrubs into geometric shapes), the landscape garden simulates the random, the organic, and the picturesque. This simulation, however, is by no means random: It is based on precise design decisions and the deliberate use of topography, vegetation, water, and architecture to create specific moods, visual relationships, and spatial experiences. In this sense, the landscape garden is a highly refined art form that conceals its methods.

Typologically, the large landscape garden can be distinguished from smaller landscape-style home gardens, 19th-century public parks, and modern city parks, even though all these types have emerged from it or been influenced by it. The decisive difference lies in scale and intention: the large landscape garden is a total work of art that reinvents an entire landscape, whereas the 19th-century city park primarily served social and hygienic purposes, and the landscape-style private garden merely borrows formal elements.

Historical Origins: England, the Enlightenment, and Criticism of the Baroque

The roots of the grand landscape garden lie in early 18th-century England, where a combination of philosophical, literary, and political currents gave rise to a new aesthetic of nature. The Enlightenment, with its trust in reason and the observation of nature, stood in productive tension with the contemporary longing for the sublime and the picturesque—that is, for landscapes that evoke awe, vastness, and irregularity. Poets such as Alexander Pope, philosophers such as Anthony Ashley Cooper, the third Earl of Shaftesbury, and painters such as Claude Lorrain and Nicolas Poussin—whose landscape paintings served as direct models—shaped the aesthetic program of the new garden style.

The gardens at Stowe (Buckinghamshire), Stourhead (Wiltshire), and Rousham (Oxfordshire) are considered key early examples. At Stowe, Charles Bridgeman, William Kent, and finally Lancelot “Capability” Brown—who would become the most influential landscape architect of the 18th century—worked in succession. Brown earned his nickname “Capability” from his habit of identifying the “capabilities” of a site for improvement. His style, characterized by meandering lakes, gently undulating lawns, clusters of trees, and belts of trees along the edges, became the epitome of the English landscape garden and influenced hundreds of gardens throughout Great Britain.

At the same time, a theoretical debate developed about the picturesque, led primarily by William Gilpin, Uvedale Price, and Richard Payne Knight. These authors criticized Brown’s style as too smooth and too orderly and called for a rougher, wilder garden aesthetic more closely aligned with painting. This debate is important for understanding the grand landscape garden because it shows that the style was not a uniform doctrine but a dynamic field of aesthetic debate.

The landscape garden style reached Germany in the second half of the 18th century, initially through travelogues and publications, then through direct commissions of English gardeners and the work of local designers such as Friedrich Ludwig von Sckell, who laid out the English Garden in Munich, and Peter Joseph Lenné, who had a decisive influence on the Potsdam park landscape surrounding the New Garden and Sanssouci Park. Prince Franz von Anhalt-Dessau created the Wörlitz Park, the first significant landscape garden project on German soil, which is now a UNESCO World Heritage Site. In these German gardens, the English landscape style is often combined with Enlightenment-era educational programs: temples, inscriptions, monuments, and symbolic structures transform the garden into a walk-through total work of art with a moral and political message.

Design Principles and Design Elements of the Grand Landscape Garden

The grand landscape garden employs a range of design elements that, when combined, create its characteristic spatial experience. The most important element is the staging of visual relationships: the path through the garden is a sequence of images that the designer has deliberately composed. Axial views open up onto temples, bridges, or bodies of water; groups of trees and shrubs frame vistas and block unwanted views; hills and depressions create moments of surprise when, after an ascent, a sweeping view suddenly opens up.

Water plays a central role. Natural or artificially created lakes and ponds with irregular, curved shores are a hallmark of the style. Capability Brown was famous for transforming rivers into expansive lakes through damming, which gave the impression of natural bodies of water. The reflection of the sky and the surrounding vegetation on the water’s surface significantly enhances the sense of depth in the space. Bridges, islands, and shoreline plantings complement the body of water as design elements.

Vegetation is conceived not as individual plants but as mass and volume. Solitary trees—that is, freestanding individual trees with distinctive shapes or sizes—provide focal points within the lawn. Groups of trees and shrubs of varying sizes and compositions structure the space and create a layering of foreground, middle ground, and background reminiscent of landscape painting. Belts of trees and shrubs along the garden’s edges enclose the grounds from the outside and create the impression of a self-contained world. The lawn itself, referred to in the original English as “lawn,” is not merely leftover space but a design element: it connects the groups of trees and shrubs, guides the eye, and gives the garden its sense of expansiveness.

Architectural features—such as temples, grottoes, ruins, bridges, obelisks, and similar structures—complete the picture. They are not functional buildings but rather convey meaning: they allude to ancient models, literary themes, or the client’s worldview. Ruins, whether genuine or artificially created, are a particularly characteristic element because they symbolize transience and the superiority of nature over human creation—a central theme of Enlightenment aesthetics.

Plant Selection and Vegetation Design in the Landscape Garden

The use of plants in large landscape gardens follows different principles than in formal gardens. The focus is not on the individual plant with its botanical characteristics, but on the effect of the mass of plants within the space. For woody plantings, native tree species were and continue to be used predominantly; in Central Europe, these include oak, beech, hornbeam, linden, ash, maple, and alder, supplemented by introduced species such as plane tree, horse chestnut, and various conifers, which have been widespread in European landscape gardens since the 18th century.

Creating woody plantings in the landscape garden style requires thinking in terms of long time frames. A tree planted today as a solitary specimen will not fully unfold its spatial impact until decades later. Capability Brown is said to have remarked that he worked for posterity, not for the present. This temporal dimension is a fundamental difference from architecture: the landscape garden is never finished; it changes continuously through the growth, aging, and loss of trees and shrubs. Professional care and maintenance must guide this process without destroying the original design concept.

The lawns of historic landscape gardens were originally maintained through grazing by sheep and cattle, which also served an ecologically valuable purpose. With the invention of the lawn mower in the 19th century and the increasing mechanization of maintenance, maintenance practices changed fundamentally. Today, those responsible for maintenance face the challenge of balancing the preservation of the historic character, the demands of visitor use, and the goals of promoting biodiversity. Extensive meadow management with infrequent mowing, the creation of wildflower strips, and the promotion of old-growth wood in groups of trees and shrubs are strategies that are increasingly being incorporated into modern maintenance concepts for historic landscape gardens.

The introduction of exotic woody plants, particularly rhododendron species and conifers from North America and East Asia, was a significant expansion of the plant repertoire in the 19th century. Many historic landscape gardens today contain significant collections of these species, which have since acquired historical value in their own right. At the same time, Rhododendron ponticum has become an invasive problem in Atlantic-influenced regions of Great Britain and Ireland, threatening the ecological integrity of historic sites. This tension between historical authenticity and ecological responsibility is a central theme in today’s preservation of landscape gardens.

Maintenance, Preservation, and Management Concepts for Historic Sites

Historic landscape gardens pose special challenges for heritage conservation because their heritage value lies not in solid materials but in a living, ever-changing composition of vegetation, topography, water, and architecture. The challenge lies in preserving the spirit of the original design without freezing the growth of the vegetation or reducing the site to an artificial state. Maintenance concepts for historic landscape gardens must therefore be based on a careful historical analysis that evaluates sources such as original plans, paintings, engravings, travelogues, and plant lists.

In Germany, historic garden conservation has established itself as a distinct discipline situated at the intersection of landscape architecture, historic preservation, and garden history. The Florence Charter, a document adopted in 1981 by the International Council on Monuments and Sites (ICOMOS), defines principles for the preservation of historic gardens and parks. It emphasizes that the historic garden is a living monument that requires continuous care, and that restoration measures must be based on documented sources.

Practical maintenance tasks in historic landscape gardens include the regular inspection and care of tree and shrub populations, the preservation and restoration of water features and ornamental structures, the maintenance of lawns and paths, and the management of visitor flows. The latter is a particularly complex task in heavily visited sites such as the English Garden in Munich or Sanssouci Park in Potsdam, where user needs, historic preservation, and ecological goals must be balanced. Foot traffic, soil compaction, and damage to the root systems of old trees caused by visitors are real threats that are mitigated through route guidance, signage, and, if necessary, temporary closures.

Significance for Contemporary Open-Space Planning, Climate Adaptation, and Biodiversity

The large landscape garden is not a museum relic, but rather a reference model that remains highly relevant for today’s open-space planning and urban development. Its fundamental principles—the linking of open spaces into contiguous green spaces, the use of topography and water as design elements, and the creation of spatial diversity through the alternation of open and enclosed areas—are reflected in modern concepts such as the Green Belt, Green Infrastructure, and the 21st-century city park.

In the context of climate adaptation, this type of landscape garden offers specific advantages. Extensive stands of trees and shrubs create cooling effects through evaporation and shading, which are increasingly in demand in overheated cities. Extensive lawns and water bodies help regulate the urban water cycle by absorbing, temporarily storing, and gradually releasing rainwater. The topography of many historic landscape gardens—with hollows, depressions, and ponds—corresponds in its basic structure to the principle of the “sponge city” (a concept of water-sensitive urban planning), which is currently being discussed as a response to increasing heavy rainfall events.

For biodiversity, large-scale landscape gardens—with their stands of mature trees, extensive lawns, bodies of water, and wooded edges—serve as valuable habitats. Old oaks, beeches, and linden trees, with their hollows, cracks, and dead branches, provide habitat structures for bats, woodpeckers, beetles, and numerous other species that can hardly find a place in intensively used urban landscapes. Promoting deadwood, adopting a more extensive approach to lawn care, and creating riparian buffer zones are measures that can enhance the ecological value of historic landscape gardens without compromising their character.

At the same time, open-space planning must critically reflect on what the grand landscape garden historically also was: an instrument of land acquisition and social segregation. Many of the most significant English landscape gardens were created through the enclosure and transformation of common land—a process that displaced villages and dispossessed farmers. This socio-historical dimension is essential to a complete understanding of the type, even if it does not negate its aesthetic and ecological value.

The Grand Landscape Garden as an Enduring Design Model

The large landscape garden established a design philosophy that extends far beyond its historical context of origin. The idea that open space is designed not through geometry but through reflection on spatial sequences, visual relationships, movement, and atmosphere remains a fundamental principle of landscape architecture to this day. Anyone planning a city park, a park complex, or a large-scale open space works—consciously or unconsciously—with techniques developed in 18th-century English landscape gardens.

The strength of this typology lies in its adaptability. The large landscape garden can serve simultaneously as a recreational space, a nature conservation area, a climate buffer, a cultural heritage site, and a source of urban identity. It requires its planners and caretakers to think in the long term, to understand ecological processes, and to exercise aesthetic judgment that transcends short-term trends. This combination makes it a challenging yet rewarding field of practice for landscape architecture.

The great historic gardens—from Stourhead to Wörlitz to the English Garden in Munich—are not only testaments to a bygone era of garden art, but also living laboratories where one can observe how vegetation, topography, water, and architecture have interacted over the centuries. Anyone who walks through these gardens with a knowledgeable eye learns more about open-space planning than from many textbooks. The grand landscape garden remains what it has been since its inception: a design model of extraordinary depth and durability.

Cities for tomorrow 2021

Building design

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How do our metropolitan areas need to grow and what do cities still need to learn in the future? Look forward to the mini-series “Cities for tomorrow 2021”.

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(Issue 04/21)

The total population in Germany will change only slightly by 2035. Nevertheless, the demographic trend will hit us with full force – both in the metropolitan areas and in rural areas. In the April 2021 issue of G+L, our focus is on metropolitan areas and their increasing growing pains. We take a look at Frankfurt, Hamburg, Leipzig, Paris and Potsdam and critically discuss how cities will deal with the increasing pressure on space in the future without cannibalizing their green spaces.

Planning between city and region

(Issue 05/21)

Around 60 percent of German districts and independent cities will lose population by 2035. Eastern Germany in particular is massively affected by shrinkage, but the “old federal states” are also struggling with population losses. At the same time, numerous regions are having to absorb and compensate for the growth of nearby metropolitan areas. In the May 2021 issue, we turn our attention to rural areas and ask how urban and rural areas can support and learn from each other in terms of healthy development.

The diverse city

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Since 2019, around 100 Polish local governments have declared their regions to be “LGBT-free zones”, while the small Hungarian town of Nagykáta followed suit in November 2020 and also passed a resolution banning the “dissemination and promotion of LGBTQ propaganda”. According to the Gay Travel Index, homosexuals face the death penalty in 15 countries worldwide. In the June 2021 issue, we want to set an example against LGBTQ phobia with positive examples. We present the Queer Inclusive Planning approach and discuss with experts from urban planning and society how we can support and promote diversity and tolerance in our cities through planning.

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