Vincent van Gogh's paintings and drawings
I went to the Van Gogh museum in Amsterdam because I was there and it was on the bucket list. Pictures in a book or on web pages do not do justice to how vibrant the pictures are in real life. Plus, in the days before additional security was required, you could go right up to them (within reason) and check them out up close. They look like they were painted yesterday. Not everyone likes his work but I'm a fan.