I'm a fan of 20th century art...especially surrealism & "pop" art from the 1960's. I enjoy architecture, but can't tell you much about it other than it looks really cool
If you enjoy more "modern" art and are near Pittsburgh, PA I highly recommend the Andy Warhol museum...it's the largest single-artist museum in the U.S. & is quite informative. And if you enjoy his work, you'll be in heaven for 4 entire floors!