The heart of the building is the parliament’s round main meeting hall, which, with a diameter of 51 m and a height of 26 m, is supported by eight columns at a height of 9 m. It has room for approximately 1,100 people. This hall is at the centre of the building’s quadratic floor plan, and is surrounded by a five-storey structure containing a banquet hall, foyer and reception areas and office space. For seismic protection reasons, the main meeting hall and the five-storey structure are structurally independent of each other, and are only connected by bridges. The building also has two basement levels with exhibit areas, a museum and building services rooms.