In building complexes of at least two buildings, the buildings each have a basic size in width direction and in length direction. The length and width of the building correspond to the basic size or to a multiple of this basic size. In buildings with at least two stories, in particular in a building complex, the building has at its bottom side at least one support that supports the building with formation of a venting space between the ground and the building bottom side. The venting space is part of an air circulation flowing about the building.