If you plan on visiting the The Guggenheim Museum of Modern Art you should consider purchasing tickets online as they are much cheaper (approx $18). The downside is that you will have to pick the date and time of your visit which in many cases, if you are traveling, it is not something you can predict on the hour. The ticket included the audio guide and touring the building (on your own). You can also access the temporary exhibitions. They had a very cute shop that was selling art books of Van Gogh, Chagall and some less famous artists. You can also find very cool stuff to purchase, mostly modern art. The museum inside was amazing, but not less beautiful from the outside. You should really stand by the sculptures in different angles and you will notice something new and beautiful as you move around the same sculptures. This is one of the most impressive museums I have ever visited.