You might want to Google Images for Brasília (Brazil's capital), built in the 50's with godzilions of reinforced concrete. It's still spectacular but it's high

You might want to Google Images for Brasília (Brazil's capital), built in the 50's with godzilions of reinforced concrete. It's still spectacular but it's high maintenance and you can see concrete cancer everywhere. I'm not sure if it was a good idea to use it there but surely it is gorgeous due to the architectural possibilities of reinforced concrete.