U-Bahn train on Zollamtssteg Arch Bridge with Zollamtsbrucke Truss Bridge, Vienna, Austria, Europe

horizontal color image travel destinations travel outdoors day vienna austria europe capital cities zollamtssteg arch bridge bridge transportation connection architecture zollamtsbrucke truss bridge no people building exterior building city urban scene river water train public transportation cities urban colour image color colour daytime nobody no one no person outdoor outside rivers flowing water travel destination tourist destination tourist destinations