It is the world's most visited parliament building: the Reichstag in Berlin. During a tour, you can even watch German politicians at their work. The first edition of the German Constitution, which turns 75 this year, is also kept in a vault here. And there is a magnificent view of Berlin from the Reichstag's viewing platform. Hannah Hummel shows you how to get into the Reichstag and just how much German history can be found in it. | DW Travel