Theodore Trokhymenko
Google
I recommend you to visit this masterpiece of architecture. It was built in 1896 by Sullivan. The first skyscraper in the world. It was reconstructed in 2000-s after a big fire, and it took 15 000 000$ so it looks amazing.
The staff is friendly and helpful, they like this place and know a lot about it. You can watch a short movie about history of this building. Walk around the first floor, and look a small museum if it.