The Reichstag building (where the German parliament meets) is located in the district of Tiergarten, Berlin. The way the building looks now is due to several renovations, and especially the work of British architect Norman Foster in the 90's. The dome was added during the remodeling to light and ventilate the plenary hall, located just below it. Inside, two spiral ramps allow you to go up and down to the spectacular viewpoint. To visit the Reichstag building, you'll have to use the recently established advance booking system, which is the only way to get tickets to visit the Bundestag. Visiting hours at the dome are from 8:00 to 23:00 (last entry), with entry every 15 minutes.