In 1937 the Nazis confiscated 21,000 pieces of art that they declared debauched. Art historians connected to the Berlin's Free University have worked for eight years to compile a database that documents the outcome of that seizure.
The website is now online and explains the story of where each piece was robbed from and if they are still in existence, where the piece now resides, if the historians uncovered the present location. Some works were destroyed.
The Nazis removed artwork from public museums and private collections. Some of the artists represented are Marc Chagall, Wassily Kandinsky, Emil Nolde, and Max Beckmann.