That’s what I learned from the Architecture Foundation River Cruise. Chicago was rebuilt after the fire of 1871. According to the docent on our boat, the city invented the skyscraper. The oldest buildings we saw were from the 1920s, some with echoes of Gothic.
Then in the 30s came Art Deco. The 60s were characterized by brutal simplicity and the slogan “Less is More”. The 80s show a desire to match the building to its context, e.g. the river. So I guess if this is postmodernism, it means that there is not one best way to build everything, but the design depends on the context.
The 90-minute tour pointed out the features of a number of buildings, some of them still under construction. It was interesting but quite hard work.