Name: Helical Staircase

Description:

The stairs make one full revolution from the bottom level to the top level with a railing and posts on the outer side of the stairs. In the center of the spiral is a hollow sphere supported by winding beams with a post leading into the center of the sphere. The top level is surrounded by the same rail and posts pattern on the stairs and has a hole directly over the center sphere piece and is bordered by a hollow cylinder as a safety guard.