Abstract: A parking garage is constructed substantially as a ship hull and includes a container which is preferably made of steel or reinforced concrete parts and is subdivided into three parking levels. The container can be sunk below the water surface of a lake or river at the intended location. At the corresponding predetermined depth the garage can be leveled by raising and lowering devices arranged on the longitudinal sides of the container and which substantially bore into the bed as a result of their own weight and additional weights placed on the top of the container. In the operating state the raising and lowering devices are controlled by sensors and activated, so that even in the case of positional changes, e.g. due to different loads, an exact leveling of the parking garage is ensured. The garage is provided with two, longitudinally spaced tubular tunnels, flanged to the longitudinal side of the container and connected to the lake or river bank.