futuristic greenish mirror cylindrical westhafen tower, 30-story skyscraper westhafen tower in gutleitviertel district, frankfurt

tower westhafen european facade glass cylindrical office frankfurt futuristic tipped architecture business veneer building pattern angular strive reflex triangle hesse open frankfurter rhombic heaven contemplation abstract modern crevice rhomb window architectural landmark windowpane round sky green work reflections greenish mirror 30-story skyscraper gutleitviertel district germany