Spiral staircase on a facade in the city centre of Frankfurt am Main, Hesse, Germany, Europe

am architecture building buildings centre city day daylight daytime detail details display during europe european exterior exteriors facade facades federal frankfurt frg front fronts german germany hesse hessen hessian high high rise high riser high risers high rises highrise highrises house houses in main modern multi multi story multistoried multistory nobody of on outdoor photo photos republic rise riser risers rises shot shots spiral spiral staircase staircases stairway stairways story the tower towers view views