The imposing Reichstag reflects Germany's past, present and future like no other building. It was constructed in 1884-94 as the parliament for Bismarck's German Empire and has seen decades of German history. After the fall of the Berlin Wall in 1989 work began to return the building to its original purpose with a glass dome added by British architect Sir Norman Foster. Visitors can now climb up to the dome and there is a panorama terrace, a photographic exhibition recounting the Reichstag's turbulent history and a rooftop restaurant.