Solitude Palace has a symmetrical design.
The central axis of the palace lies precisely on the axis of the Solitudeallee avenue. The arched passage to the basement level in turn lies exactly at the center of the palace and forms the entrance to the apartment on the basement level. It is designed as a large oval room with four pillars and massive foundation walls that bear the White Hall and its cupola above. The walls are decorated with reliefs that depict the glory of war and the arts in the form of trophies.
The loggia room is part of the apartment.
The passageway to the center of the palace divides the basement level into two large areas, the east of which is now the cash office. Originally, there was an apartment here, likely since 1771, consisting of a loggia room, two cabinets, a bedroom, a vestibule, and two rooms with cloth-covered walls. The east side of the basement level is divided quite similarly, though it is less magnificently decorated. To date, it cannot be conclusively determined whether these apartments were used for guests.
