Abstract: Assembly building wherein mounting elements are used, each of said elements having a peripheral recess at the top and a depending hollow skirt portion at the bottom, said hollow skirt portion being defined by an inner shoulder and said recess being defined by an outer top flange on which the inner shoulder of an adjacent mounting element is to be supported so that between two adjacent mounting elements a peripheral gap is formed, through which gap one or more flanged building elements are to be mounted with their flange in said recess. In a preferred embodiment the respective inner shoulder and outer top flange of two adjacent mounting elements are provided with interengaging bayonet joint portions.

Abstract: A toy building assembly system to form toy parking garages for playing with toy vehicles. The toy is assembled by stacking column elements. Each column element has a depending bottom flange and a recessed upper edge, and between the bottom flange and the upper edge of successive column elements a substantially vertical peripheral gap is formed to receive upstanding flanges on floor elements and ramps which are to be mounted on the column elements.