A Madhouse is a flat ride usually manufactured by Vekoma. A similar attraction under the name Mystery Swing is created by Mack Rides. The ride is designed to be an optical and physical illusion, consisting of several rows of seats attached to a swaying gondola within a rotating drum. The ride creates the impression that the rider is turning upside down, whereas it is actually the room that is moving around them.

Villa Volta is an attraction in the amusement park Efteling in the Netherlands. It is a rare type of ride known as a madhouse, a variation of a haunted house, where the visitors get the illusion that either the building, the visitors themselves or both are turned upside down. It was designed by Ton van de Ven and was built by Vekoma in 1996. At the time it was the first of its sort; nowadays the concept has been taken over by a number of other amusement parks.