The largest museum building in Germany features more than 700 years of art under one roof in three connected buildings. A tour of this collection founded by citizens of Hamburg is like a trip through art history. Starting with the oldest work in the museum—an altar painting by Master Bertram from the 15th century—visitors stroll past works by Caspar David Friedrich, Pablo Picasso, Andy Warhol, Neo Rauch, and many, many more.