Auction fall 2025

Building design
This market-fresh work is up for auction at Van Ham in Cologne. Photo: VAN HAM

This market-fresh work is up for auction at Van Ham in Cologne.
Photo: VAN HAM

This year’s winter auctions in Cologne and Munich promise exciting art moments at the end of the year. As the days get shorter, exciting works of art can be discovered. Van Ham in Cologne and Ketterer Kunst as well as Karl & Faber in Munich are opening their rooms to exceptional works of art from the classical modern, post-war and contemporary periods. This season is characterized by spectacular collection liquidations, rare market appearances and impressive work cycles.

Van Ham in Cologne will kick things off with the Evening Sale on December 3, featuring works from the Classical Modernism and Post-War periods as well as contemporary works. Collectors of Classical Modernism can look forward to works by Max Pechstein, Emil Nolde and Alexej Jawlensky at the auction. Jawlensky’s “View of Murnau” from around 1908 is one of the artist’s first Murnau paintings. The artist discovered Murnau with Marianne von Werefkin in the fall of 1907 on their forays through the foothills of the Upper Bavarian Alps. Van Ham has valued the painting, which shows a view of Murnau’s houses, at 200,000 to 300,000 euros. A particularly haunting work is “Still Life with Mask and Sweater” by Felix Nussbaum, who was persecuted by the National Socialists as a Jewish artist and had therefore been in exile in Ostend, Belgium, since 1935. The still life was created in the Belgian coastal town and is difficult to interpret. But against the biographical background – Felix Nussbaum was murdered in Auschwitz in 1944 – it has an oppressive effect, especially the mask, which is that of a person of color. Collectors of the German artist Gerhard Richter will have the chance to bid for eight works by the artist at the Evening Sale, including both early and later works. A highlight of the auction is the painting “Beautiful Lady” by Andy Warhol from 1984. Warhol had already asked the lady portrayed several times to be allowed to depict her – until she finally agreed. The painting has been in the possession of the sitter since it was created and can now be offered by Van Ham fresh from the market for 300,000 to 500,000 euros.

Day sale and special collections
In July 2024, Galerie Thomas filed for insolvency – an announcement that sent the art world in Germany into turmoil. Auction house Van Ham was commissioned to auction off the insolvency estate. Over 400 works of art will now be auctioned off in several sales, as Markus Eisenbeis reports. Galerie Thomas had been an institution for classical modernism, expressionism and international contemporary art since 1964. On December 4, 17 works will be offered in a live auction. Around 400 works will be auctioned in two online auctions in December 2025 and January 2026. Highlights of the live auction include works by Wojciech Fangor, Leiko Ikemura and Walter Stöhrer. The Online Only auctions, also part of the Thomas estate, include works by Joseph Beuys, Serge Poliakoff and Tom Wesselmann – many without a limit. It is a rare opportunity to find works by these names at lower estimates. This auction impressively confirms that Van Ham has been a good address for insolvency auctions for years: the “Achenbach Art Auction” in 2016 already showed that the Cologne auction house has experience in this field.
In addition to the holdings of Galerie Thomas, impressive photographs from the collection of Anne Maria Jagfeld will also be on offer. The collector and interior designer has built up a photo collection of 900 works, 50 of which will be auctioned at Van Ham on December 4. Anne Maria Jagfeld has a keen interest in fashion and many of the photographs on offer are by fashion photographers such as Helmut Newton, Richard Avedon, Irving Penn and Horst P. Horst. A particular highlight is the photograph “Dovima with Elephants” by Richard Avedon. The model Dovima was one of the most successful models of her time and graced the covers of all major fashion magazines, including Harper’s Bazaar. The work now on offer at Van Ham was created for the August 1955 issue. It shows the model in a black evening dress with a white sash designed by Yves Saint Laurent for Dior between two elephants from the Paris Cirque d’hiver. Prints of the photo are in the Metropolitan Museum and the Museum of Modern Art in New York. Van Ham estimates it at 30,000 to 50,000 euros. Other highlights of the auctions include works by Max Slevogt, Max Liebermann, Otto Dix, Serge Poliakoff and Leiko Ikemura.

Further south, the auctions will take place at Karl & Faber on December 4 and 5 and at Ketterer Kunst on December 5 and 6. Karl & Faber will be presenting two works by Wassily Kandinsky from his time at the Bauhaus. The top lot of the house is the work “Calm” from 1930 by Kandinsky. It will be offered in the Evening Sale on December 4 for 1.1 to 1.3 million. The work, which is exemplary for his time at the Bauhaus, combines colors and sounds – Kandinsky was a synesthete. The influence of the Bauhaus and the artists who worked there is also evident: he lived next door to Paul Klee in Dessau.
Collectors of works on paper will also find what they are looking for at Karl & Faber: One particularly interesting work was by Amedeo Modigliani. The drawing “Cariatide” from 1913 is estimated at 380,000 to 450,000 euros. Several works on paper by Gustav Klimt and Egon Schiele will also be on offer. Paula Becker, who was not yet married to Otto Modersohn at the time, created the work “Seated Child with a Book on his Lap”. What is special about this painting from 1897/98 is that there is another depiction on the reverse: “Pond with Birch Trunks”. Paula Becker created this work on the reverse during her time in Worpswede in 1898. The work is valued at 80,000 to 100,000 euros.
All those who have focused their collecting on the second half of the 20th century will of course also find what they are looking for. An unusual work came from Andy Warhol, who created the so-called “Toy Paintings” from 1982 onwards on behalf of his friend and gallery owner Bruno Bischofberger. This series of paintings was explicitly aimed at children. It depicts wind-up tin toys from Warhol’s collection. The series comprises 128 canvases, each depicting one of the toys, including dogs, pandas, monkeys, clowns, robots or, as in the work now on offer at Karl & Faber, a parrot. In 1983, the works were exhibited at Bruno Bischofberger’s gallery in Zurich – the special highlight: the room was designed like a giant children’s room and the works were placed at children’s eye level – adults had to bend down or squat to look at them.
Ketterer Kunst also has Kandinsky on offer. The work from 1926 came from a private collection in Berlin that had been built up over four decades. The top lot of the auction was by Hermann Max Pechstein. The radical expressionist work entitled “Indian and Female Nude” was completed by Pechstein in 1910 and sold for 2 million at the auction. Andy Warhol’s rare Marylin silkscreen series, which rarely appears on the market in its complete form, also stands out. The series will be offered in the auction for an estimate of 1.5 to 2.5 million. Equally noteworthy is Robert Motherwell’s monumental “Open #184” from 1969, a major work from his pioneering “Open Series”, which is valued at 400,000 euros and impressively marks the artist’s transition to a more minimalist expression.
Overall, this year’s winter season is particularly intense: outstanding provenances, market-fresh rarities and rare collection liquidations combine to create an offer that attracts collectors from far beyond Germany – and makes the last auction weeks of the year a highlight of the art market. Anyone interested in art, market movements and the dynamics of major auctions will experience a rare interplay of tradition, rediscovery and international appeal this winter.

Read more: Restorer Katharina Haider specializes in the restoration of Post War and Contemporary art and has already restored works by Warhol, among others.

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Artificial intelligence in landscape architecture

Building design
Artificial intelligence in landscape architecture: AI optimizes sustainable and aesthetic designs through data-based analyses and automated designs. Photo: Unsplash

Artificial intelligence in landscape architecture: AI optimizes sustainable and aesthetic designs through data-based analyses and automated designs. Photo: Unsplash

Chat GPT & Co. have quickly become an integral part of many people’s everyday lives. Artificial intelligence also has a number of potential applications in landscape architecture. However, it is still rarely used – read more about this here.

Artificial intelligence, or AI, aims to imitate human intelligence. It uses existing data and simultaneously generates new data to imitate cognitive abilities. Accordingly, AI is used, for example, for writing texts and social media posts, for translations and for creating tables with complex data sets.

In landscape architecture, the tool offers potential in the areas of design, data analysis, modeling, smart irrigation, maintenance and user experience. For example, BIM models can be optimized through the AI-supported analysis of climate, soil and solar radiation data. The AI can create different designs within a short period of time, which helps to make a creative decision.

AI in landscape architecture is still in its infancy in Germany, but there are already promising possibilities. Landscape architects have a wide range of tools that they can integrate into their work. This can bring benefits such as improved design processes, sustainable solutions and increased efficiency.

The following possibilities for the use of AI in landscape architecture are already conceivable:

Design optimization: using tools such as DreamzAR, RescapeAI and Neighborbrite, AI can generate and simultaneously evaluate different design options. Renderings can also be optimized.
Data analysis: Even large amounts of data, for example from a city or municipality, can be analyzed with AI, which helps with decision-making around environmental conditions or usage analyses, for example.
Automation of routine tasks: Recurring tasks that are relatively simple can be automated using AI, saving time and resources and reducing errors. This includes tasks such as creating planting plans and calculating areas.
Optimizing water management: Using AI-powered algorithms, landscape architecture firms can analyze rainfall, soil conditions and topography to optimize stormwater management.
Maintenance and care: AI can predict which plants will grow and flower when, which are most likely to survive and which are best suited to certain conditions. This improves the maintenance of gardens and parks.
User experience: AI is also helpful for interacting with the public and in participatory processes. For example, the technology can be used to change, adapt and visualize design elements.

So far, it is mainly city administrations that are experimenting with the use of AI in landscape architecture and sharing their experiences. In Singapore, for example, algorithms are being used to help with greening in the densely populated city state. For example, Singapore has optimized the design of vertical gardens and green walls by using AI to analyze which locations provide the best conditions in terms of sunlight, water availability and plant compatibility. In addition, AI-supported systems accompany hydroponic cultivation areas to optimize their yield and use resources efficiently.

In New York City, where extreme weather events such as heat waves, flooding and coastal erosion are among the challenges, AI is helping to analyze urban heat islands. This allows the city administration to quickly identify where green infrastructure is best placed to cool the city and improve air quality at the same time. AI models in New York can also predict sea level rise and flooding, helping to create resilient coastal parks and wetlands that protect the city.

And in Tokyo, environmental sensors are widespread in the parks, helping to keep an eye on plant health and intelligently plan irrigation. It is even possible to analyze biodiversity to identify exactly which ecosystems should be protected in which areas of the parks.

According to Competitionline, more than half of architecture firms in Germany already use artificial intelligence, although many others are still hesitant. The latest tools are particularly popular for text and image processing.

As with all new technologies, there are also reservations about AI. At a conference of the Landscape University Conference in 2024, Professor Olaf Gerhard Schroth from Weihenstephan-Triesdorf University of Applied Sciences explained how satellite image analysis could succeed with the help of AI and how deep learning can also be used for landscape architecture.

Schroth has achieved good and in some cases convincing results in the visualization of planting plans and the development of landscape images. At the same time, he raised critical aspects of AI, such as “hallucinations”, unclear copyrights and the creation of stereotypes.

Other experiences shared at the conference showed that AI-generated images are often faulty or cannot be implemented. At the same time, however, they are visually very appealing and offer the possibility of creating a plan based on the planting image.

The immense energy consumption of AI must also be considered. This is because the huge amounts of data that have to be stored in order to use the technology consume a lot of server space, which is not very climate-friendly.

What is certain is that it is important to engage with the topic of artificial intelligence. Because although the technology – like other technologies – cannot take over landscape architecture on its own, it offers many exciting possibilities. It is important to bear in mind that AI software is less trained and developed for the generally small discipline of landscape architecture compared to other disciplines.

Whether AI-optimized CO2-reduced concrete mixes, the automated evaluation of customer and user reviews, aerial image analyses, pricing strategies or the identification of harmful plants and waste on drone images, the technology can support creative processes. At the same time, there is still a need for human performance such as spontaneity, ingenuity, intuition, artistic and creative skills or empathy for the client’s wishes. AI can improve landscape architecture, but it cannot take over.

Read more: Another fairly new technology that is already playing a major role in urban development is augmented reality.

Attractiveness thanks to ceramics

Building design
Image: Tile of Spain/Zyx

Image: Tile of Spain/Zyx

When renovating the home, we use ceramic tiles to create a variety of accents. Here you can find tips, ideas and information for the perfect implementation.

When renovating the home, we use ceramic tiles to create a variety of accents. Here are tips, ideas and information on how to achieve the best results.

At some point, it’s time to give your home a new look. To achieve an attractive result for this personal project, you need the right material. This is exactly where ceramic tiles come into play, as they offer a whole range of advantages in terms of design.

In addition to the huge variety of colors, patterns and formats as well as the different surface and design variants, they score points with their natural touch. The tiles are also recyclable, hard-wearing, easy to clean and fire-resistant. Here are some practical tips, creative ideas and valuable information about ceramic tiles that will make our homes shine in new splendor:

Nowadays, one of the basic principles when renovating your own four walls is to focus on sustainability. Ceramic wall tiles are the ideal choice as they consist of 100% natural components. The hard-wearing surfaces also minimize maintenance costs. This creates a healthy living environment that benefits people and the environment in equal measure.

If we use ceramics for interior design, lighting – whether natural or artificial – also becomes more important. This is because the material makes use of the properties of light and thus helps to make rooms appear more spacious. Thanks to their polished or glazed surfaces, the tiles also have their very own “luminosity” and thus increase the attractiveness of the home in a very special way.

Ceramic wall tiles with reliefs are an example of how different volumes can influence the sense of space. The visual effects are very diverse: they replace linearity with movement and evoke images through touch. Combining these pieces with smooth surfaces also creates exciting contrasts in the room.

Color has a decisive influence on the feeling that a room conveys. That’s why you should always think about the style you want to create before choosing a color combination. Thanks to the variety of colors that we find in the ceramic collections, it is possible to create any color composition that suits the individual furnishing style.

Unique designs

By choosing the color, shape or finish of the tiles, we give our home a very personal touch. But that’s not all: among the infinite aesthetic possibilities offered by ceramic tiles, we can find tiles with graphics and patterns, including floral motifs, damasks, geometric patterns and digital or oriental inspirations. Ceramic sets no limits, all imaginable designs are possible and make our homes unique and original.

Thanks to the versatility of ceramic tiles, we can design rooms individually and create a balance between private retreats and communal areas. Whether it’s the kitchen, bathroom, playroom, bedroom or dressing room, living or dining area – we create all rooms in such a way that our home becomes a feel-good place for the whole family.

Further inspiration from the world of Spanish tiles and the free benefits brochure are available at tileofspain.co.uk