Here is one that I think is a prime example: https://commons.wikimedia.org/wiki/File:Olsen_Hall.jpg https://commons.wikimedia.org/wiki/File:Olsen_Hall.jpg https

Here is one that I think is a prime example: https://commons.wikimedia.org/wiki/File:Olsen_Hall.jpg https://commons.wikimedia.org/wiki/File:Olsen_Hall.jpg https://www.flickr.com/photos/42803091@N07/5577837230 https://www.flickr.com/photos/42803091@N07/5577837230 A search for it by name will show many more pictures. It's from 1974. It is really all thick concrete, inside and out. It used to feature brutalist landscaping consisting of mostly-dead grass, but that has obviously changed.