cologne, germany - september 11, 2016: the romanesque catholic church `gross sankt martin` great st. martin in the old town of col

2016 and architecture attraction background bavaria bavarian bridge building cathedral catholic central christian church city cityscape cologne colored colorful destination dom europe european famous fountain from german germany gothic great historic hohenzaller hohenzollern holiday house houses koln kolner landmark medieval near north old outdoor panorama promenade railway region religious rhein rhine rhineland river roman romanesque september sightseeing street style tourism tourist touristic tower town travel under urban vacation view viewpoint westphalia