Alejandro Echeverri

Building design

Alejandro Echeverri is an architect and the driving force behind one of the most exciting urban developments of recent years: the resurgence of MedellĂ­n. He is now touring the world’s major cities with his model. But he knows how much remains to be done in his home city.

Alejandro Echeverri is an architect and the driving force behind one of the most exciting urban developments of recent years: the resurgence of MedellĂ­n. He is now touring the world’s major cities with his model. But he knows how much remains to be done in his home city.

In fact, the metaphor of the city as a body is a thing of the past. But when Alejandro Echeverri uses it, it takes on a new connotation: the Colombian architect and urban developer is not talking about veins and arteries as supply channels or the brain as a business and therefore decision-making center. But of the skin. For Echeverri, the city is first and foremost a skin-like phenomenon. “It’s about the skin of the city, the concrete and vulnerable districts in the city center.” The city is sensitive, the city is vulnerable. But through deliberate architectural interventions, something can be created on the skin of the city “that makes people proud”. And for him, pride is a core concept of his major project: the fundamental transformation of his home city of MedellĂ­n from a run-down drug capital into a diverse and, above all, liveable metropolis.


Baumeister_Koepfe_Echeverii_Architekt_urban_Medellins_Metropole_2

Baumeister_Koepfe_Echeverii_Architekt_urban_Medellins_Metropole_3

From 2005 to 2008, Alejandro Echeverri headed the department for “urban projects”, something like an urban development office in MedellĂ­n. Today, Echeverri heads the “Center for Urban and Environmental Studies” at MedellĂ­n’s EAFIT University. Above all, however, he is an architect. The built environment, visualizing and structuring urbanity is his passion. This also leads to statements that border on the emotional. “We have to treat our city with love. Architecture can do that.”

In the noughties, Echeverri and his boss, then mayor Sergio Fajardo, made changes to various districts. They built new bridges in barrios such as the extremely poor Andalucia. They raised a cable car that now connects Santo Domingo with the city center. And all of this, at least in the case of Echeverri and his team, was done without any official party connections. “We simply had our ideas: Bringing public transportation to poor areas; opening up spaces; building schools and learning centers. And people listened to us.” The result: MedellĂ­n got rid of its bitter status as the crime capital of the world. Cities like Ciudad Juárez in Mexico reaped the rewards.

Echeverri’s relationship with politics is distanced. In general, “politics in MedellĂ­n is a very fragile thing”, as he says. Good and evil, change-makers and obstructors of change – it is not always possible to make a clear distinction here. And of course MedellĂ­n’s problems have not been solved. The murder rate has actually risen significantly since 2008: 150 out of every 100,000 people are murdered every year. More than the 75 five years ago, but significantly less than the 420 in 1993, the year in which Pablo Escobar was shot dead by police officers. Of course, the problem of drug production throughout the country has by no means been solved. Most observers agree that the American government’s “War on Drugs” has failed. Colombia’s ambassador in London, Maurizio RodrĂ­guez, calls for a “completely new way of thinking” in an interview with The Guardian newspaper.

Read more in Baumeister 1/2014

Photos: Iwan Baan

YOU MAY ALSO LIKE

Urban biodiversity: place design for people and nature

Building design
Sustainable urban planning promotes biodiversity: How the design of urban spaces strengthens the coexistence of people and nature. Photo: nathalieburblis via pixabay

Sustainable urban planning promotes biodiversity: How the design of urban spaces strengthens the coexistence of people and nature. Photo: nathalieburblis via pixabay

In times of advancing urbanization, the promotion of biodiversity in cities is increasingly recognized as the key to a sustainable and liveable future.

A recent study by the Technical University of Munich (TUM ) shows how the targeted design of urban spaces can not only increase people’s well-being, but also optimize the habitat for plants and animals. This article sheds light on how the urban planning of tomorrow will benefit both people and nature by focusing on biodiversity and ecological sustainability.

Biodiversity – the diversity of animal and plant species – is the basis for stable and resilient ecosystems. In urban areas in particular, which are characterized by sealing and high building density, it is becoming increasingly important to promote this diversity. Species-rich green spaces not only help to improve the urban climate, but also strengthen the human immune system, promote well-being and have positive effects on the microbiome, the microbial organisms that live in and on the human body. These findings underpin the urgency of focusing environmental design in cities more on biodiversity.

The benefits of a biodiverse environment are far-reaching: studies show that green spaces can reduce stress levels, improve air quality and increase the quality of life. Especially in densely populated urban areas, green oases are essential for the mental and physical needs of residents. Urban greenery therefore not only has an aesthetic function, but also makes a real contribution to people’s well-being.

As part of an extensive study, TUM researchers have analyzed 103 public spaces in Munich for their biodiversity. The aim was to find out how different design elements such as plant species, soil composition and proximity to natural habitats influence the occurrence of flora and fauna. The results show a clear picture: significantly more species settle in places that have been deliberately and differentially landscaped than in largely sealed areas.

One example: on the heavily sealed Marienplatz, the researchers found only 20 species, including some insects and a few birds. The Pfrontener Platz, which was equipped with trees, bushes and lawns, was quite different – 156 species, including 21 bird species, were recorded here. This study makes it clear that more greenery in the city, especially a careful selection of plant species, plays a key role in biodiversity. The researchers also pointed out that the size of the area also plays a role – larger areas offer more space for different species to colonize.

The research findings underline that not every type of green space has the same positive impact on biodiversity. While lawns generally benefit many species, especially ground-dwelling organisms that serve as food for larger animals, trees and shrubs are particularly important for certain animal species. Varied planting that provides different habitats and food sources is therefore crucial for promoting biodiversity.

Combined green spaces that combine trees and shrubs with open lawns and flowering plants are particularly beneficial. This mixture creates a diverse habitat for different species and makes it possible to specifically promote biodiversity in the city. The choice of plants also plays a role: native plant species are often better adapted to the local climate and therefore provide a better habitat for native fauna.

In addition, different tree species can also play an important role as they provide different food sources and habitats for animals such as birds, insects and small mammals. Vertical greening, such as green walls or roofs, can also create additional habitats, especially in densely built-up areas.

A central point of the study is that the design of public spaces should not be based on a “one-size-fits-all” approach. Every place has its own characteristics that need to be taken into account when planning. The needs of the resident animal species and the climatic conditions of a district play a major role in determining which plants and structures are suitable for promoting local biodiversity.

A practical example: if you want to attract specific bee species, you should not only plant nectar-rich flowers, but also provide open areas for nesting. As bees prefer warmth, city center areas with sufficient sunlight are also good locations for such measures. It also makes sense to create artificial nesting opportunities for birds or bats in order to further promote biodiversity. The focus should not only be on the visible aspects of nature, but also on the promotion of microhabitat structures, such as compost heaps or dead wood, which serve as habitats for many animals.

The results of the TUM study make it clear that a lot can be achieved with just a few targeted measures. Large-scale redevelopment is not always necessary; it is often sufficient to design existing areas in such a way that they promote biodiversity. Integrating natural elements into urban planning is therefore a simple but effective way of not only improving the quality of life of city dwellers, but also making an important contribution to the preservation of biodiversity.

The urban planning of the future must therefore focus on the interaction between humans, animals and the environment. A sustainably designed urban landscape not only offers people a better quality of life, but also promotes the preservation of valuable ecosystems and helps to combat the climate crisis. The TUM study provides an important impetus to actively promote this change in urban planning.

The targeted promotion of biodiversity in urban areas is not a luxury, but a necessity. Cities that incorporate the needs of flora and fauna into their planning not only create liveable spaces for their residents, but also make an active contribution to preserving our environment. By designing public spaces sustainably, cities can not only become greener, but also more resilient to the challenges of climate change.

Sustainable cities are characterized by their ability to combine nature and urban infrastructure. When nature is considered as an active part of urban planning, a space is created that not only promotes biodiversity, but also benefits the social and cultural values of a community.

You can find out more about the results of COP15 and the global efforts to protect biodiversity in our article on the subject – read on here.

Johannes Ludwig – 2170 apartments in Munich

Building design

The Munich architect and university lecturer Johannes Ludwig (1904-1996) is best known for his church buildings, such as the Paul Gerhardt Church in Munich-Laim, his school buildings and the interior design of the Collection of Classical Antiquities in Munich. However, he also planned and realized a total of more than 2,000 apartments in Munich, including the Mollau housing estate in Sendling, terraced buildings and high-rise buildings in the […]

The Munich architect and university lecturer Johannes Ludwig (1904-1996) is best known for his church buildings, such as the Paul Gerhardt Church in Munich-Laim, his school buildings and the interior design of the Collection of Classical Antiquities in Munich. However, he also planned and realized a total of more than 2,000 apartments in Munich, including the Mollau housing estate in Sendling, terraced buildings and high-rise buildings in the Bogenhausen park district, multi-storey apartments in Maxvorstadt and accommodation in Milbertshofen.

Residential buildings were built in rows, in blocks, in city-expanding estates or as solitary buildings, which together still characterize the image of the city today. All “without false ambition” and “without pizzazz”, as Johannes Ludwig himself put it. At first glance, they appear rather harmless and unpretentious, but a closer look reveals that this is precisely their special quality and how clearly, finely and sparingly they were designed and how precisely the architectural decisions were made.

As a contribution to the current debate on housing construction, the Bavarian Chamber of Architects, in cooperation with the TU Kaiserslautern, is showing these unagitated and unspectacular everyday buildings in an extensive exhibition until November 23: current photos and drawings created with students from the TU Kaiserslautern document Ludwig’s work and are juxtaposed with historical photos, plans and references.

Information about the exhibition

Admission to the exhibition and architecture club is free.

Opening hours
Mon – Thu: 9.00 a.m. to 5.00 p.m.
Fri: 9.00 a.m. to 3.00 p.m.
Closed on 01.11.2018

Exhibition duration
until November 23, 2018

www.byak.de