Kranhaus ("crane house") is one of three 17-story buildings, collectively Kranhäuser, in the Rheinauhafen of Cologne, Germany. Their shape, an upside-down...

Rheinauhafen (left) as seen from the South: two of the three Kranhäuser already completed, "Kranhaus1" and "KranhausPLUS", designed by Hadi Teherani. In...