Hotel Im Wasserturm, Cologne

The Hotel Im Wasserturm is easily one of the most unusual and unforgettable hotel choices in the bustling city of Cologne. As the name suggests, the hotel is actually located inside of a former water tower. The Hotel Im Wasserturm is in a residential part of the city, but it is right next to a U-bahn stop and is just a short walk from the world-famous Cologne Cathedral. The best part about staying in the 140-year-old hotel is the panoramic, 360-degree views possible from the rooftop terrace of the building.