The building houses the personal offices of the Chancellor and the Chancellery staff. The Berlin Chancellery is one of the largest government headquarters buildings in the world. By comparison, the new Chancellery building is ten times the size of the White House. A semi official Chancellor's apartment is on the top floor of the building. The 200-m², two-room flat has thus far only been occupied by Gerhard Schröder chancellors since then have lived elsewhere. It is usually not possible to visit the building, but on occasion there are tours, usually around August. The building was deliberately designed in a way to symbolize the German constitutional system - it's in the line of sight of the Bundestag and lower in height, symbolizing the role of parliament in controlling government and "the people's house" being the higher power in the relationship between the two. Or at least that's the idea.