Josef CHOCHOL (1880-1956), Czech Architect, was one of three great cubist architects together with Pavel Janak and Josef Gocar. Each one of three buildinjgs in Vysefrad of Prague is recognized masterwork of cubist architecture. The plastic art of cubists who considered the crystallization as purest form of a material, the form in details, such as a window, cornices and a pillar of a handrail, and a doorknob, is realized beautifully.