The German Parliament’s Jakob-Kaiser-Haus providing members’ offices, committee rooms and other functions is actually a group of nine houses on both sides of Dorotheenstraße forming a functional unit. Five teams (ASP (Houses 1 + 2), Bussmann + Haberer, de Architecten Cie, gmp, Thomas van den Valentyn) were commissioned to ensure differentiated design for the buildings. The main entrance in House 1 leads into a light hall area with a glass ceiling where the ensemble’s lines of communication meet. From here, the way runs via stairs into the underground passage with a link to the Reichstag and the part of the building south of Dorotheenstraße, and there is also a cascade of steps leading up to the office areas. Running across it, the narrower and dramatically high east-west hall creates a link with houses 3 and 4. Houses 1 and 2 are the two new buildings near the surviving Reichstag President’s Palace, which has become part of the ensemble. Appropriately to the character of the Dorotheenstadt, their facades are clad in grey-green sandstone and finished with floor-to-ceiling. The interior of the houses is dominated by the contrast between exposed concrete, glass, steel stairs and bridges and a number of wooden surfaces. The rowing eights in the four basic colours hanging in the hall and floating up and down are a work by Christiane Möbius.