view of river main and westhafen tower, modern residential buildings frankfurt, germany, 30-story skyscraper westhafen tower in

gutleitviertel westhafen tower district banks skyscraper buildings main river frankfurt germany boat winter glass building gerippte shore waterfront urban cityscape skyline water european yachts architecture modern city steel contemporary landmark travel destination sightseeing riverfront vessels transportation luxury leisure docked floating nautical marine outdoors activity business commercial view residential 30-story concept international tourism