
Towards sustainable, beautiful built environments. Progressive traditionalist. Politics. Job: @cmarschner 🌻 🇪🇺
München, Bayern
Joined May 2016
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Insane and amazing at the same time.
In Europe they simply knocked off the plaster
The historic 19th-century facade of the former Chong Inc. building at 616 Race Street in downtown Cincinnati, Ohio, being uncovered as workers remove a 1950s brick veneer...
In the 1950s and ‘60s, downtowns across America were losing shoppers to the suburbs. New shopping centers and malls looked sleek and modern, while old Main Street buildings with carved stone and ornate windows suddenly looked dated.
Many owners decided to cover them up instead of tearing them down. Plain brick, aluminum panels and metal screens were bolted right over the original fronts, a practice now often called “slipcovering.”
It was cheap and fast, and it made old buildings look new. But it hid decades of craftsmanship behind blank walls.
Attitudes started to change after New York’s original Penn Station was demolished in 1963, a loss that shocked the public. Three years later, Congress passed the National Historic Preservation Act, and in the 1970s, new tax incentives began rewarding owners for restoring historic buildings instead.
Because the old facades were usually covered rather than destroyed, many survived underneath. As the panels come off today, cities are finding original windows, stonework and decorations that haven’t seen daylight in more than 60 years.
Removing a slipcover often reveals the original building’s details in surprisingly good condition, because the cover protected them from weather and pollution for decades.
#archaeohistories
In 2023 I took a few months off of work to follow a couple of ideas I had around funding a company in the city planning or architecture space... given that we now had AI.
Out of about 20 ideas, none really clicked, and I abandoned the idea.
The reason was that the goal was too hard. I didn't only want to create a profitable company, I also wanted something that would make our cities better, more livable, more beautiful. In a landscape that is dominated by a system that is mostly governed by laws and economies of a lot of agents with little power and money. And where I didn't have the education or contacts to make it happen. Which gives a very tiny solution space.
One of them was the nucleus of a city simulator that I spent some time writing, not sure where it would lead to.
Obviously, back then, ramping up on such a thing was a big ordeal. GIS APIs, multi-agent systems, parallel computing. I had something incredibly simple running.
Now I just gave Claude Code the old repository and told it to fancy it up. Within 10 minutes it came up with the below, which is already 10 times better than what I had.
This is just incredible. Let's see where it takes us.
If you're a professional, what would you like to get out of a full city simulation that is hard today?
Clemens Marschner retweeted
🤯 Architectural models in the 1880s were on another level.
This extraordinary 1:25-scale model reveals a longitudinal section through the Opéra Garnier in Paris, exposing the complexity of the building beyond its iconic façade, from the auditorium and stage to its layered circulation and structural spaces.
🏆 Architecture Reimagined Competition: Redefine the future of architecture with AI and compete for a share of $120,000 in prizes.
paacademy.com/competitions/c…
The model was based on drawings published by architect Charles Garnier in Le Nouvel Opéra de Paris in 1880 and was later created for the Musée d’Orsay.
A remarkable example of how physical models were used to communicate architectural space and construction long before digital visualization.
🎥 Ramziddin Gayratov
#ParametricArchitecture #ArchitectureModel #PhysicalModel #OperaGarnier #CharlesGarnier
A discussion yesterday on how rents can be lowered in Munich turned into a thought experiment.
In a growing city, how do you manage construction? City planners‘ only answer has been to add soulless blocks on the fringes.
But that‘s the wrong answer for a traditionally monocentric city.
Instead, new centers need to be developed that have such a high quality of life that they compete with the old city. Suddenly it becomes fractal.
Here‘s Munich and it‘s four new satellites.
Leon Krier about fractal expansion of cities
(Reminder from @TheCityMentor)
City planning patterns from Christopher Alexanders “A pattern language”
- 2: The Distribution of Towns. He basically argues for a power law-distributed size vs number pattern (10x as many small towns of 1/10th of the size of the next bigger scale). Which is what naturally occurs in complex adaptive systems without central planning
- 3: City Country Fingers. Cities should grow outward in narrow fingers, with fingers of farmland reaching back in. This gives a long, branching city edge, so nobody lives far from open land. Munich has a few of those (English garden, Hachinger Tal, Isartal, Würmtal). Rivers mKe this particularly easy
- 8, 12, 14 and 37: Mosaic of Subcultures, Community of 7000, Identifiable Neighborhood and House Cluster. These describe the city as small cells inside bigger cells: about 8–12 houses in a cluster, roughly 500 people in a neighborhood, about 7,000 in a community, and many communities forming the city mosaic.
- 13 and 15, Subculture Boundary and Neighborhood Boundary. These say each of those cells needs its own edge, so the same idea of a cell with a boundary appears at each level.
- 28–30: Eccentric Nucleus, Density Rings and Activity Nodes. Each community gets its own centre and density gradient, which repeats the city's core-to-edge structure at a smaller size.
He argued for fractal cities before the term got into widespread use
Special conservation areas make it difficult to extend the city along the river, unfortunately. They are protected by a law which translates an EU directive into national law. So, since 1992, those designated areas are exempt from getting developed. Unfortunately, this way the northeastern area doesn‘t work anymore as a quality agglomeration. Similarly the moors east of Dachau would restrict what can be done there.
Clemens Marschner retweeted
German architecture schools. It takes years of training to design soul-crushing hulks like this. All wit, charm, love of beauty, and human sympathy must be drilled out of you.



























