A traveler’s hideaway tucked in the 2,000-year-old German city of Cologne. The QVEST is a beautifully designed hotel that expertly blends old and contemporary and can be found within a gothic building behind St. Gereon's Basilica. Built in 1897, the building was formerly home to the Historical Archive of Cologne. …

Once, it was Europe’s biggest water tower, now it is one of the best conversion jobs in the world. In this 130-year-old building, you will stay inside a design job worth $75 million. The 11-meter high lobby is as impressive as the collection of art hanging on the walls, including …