When in Copenhagen, you have at least to drive, bike or walk past Radisson Blu Royal Hotel, København, a piece of Gesamt Architecture designed between 1956 and 1960 by one of Danish starchitects, Arne Jacobsen. Arne also designed a lot of the Interior. Think Egg chair and Swan Chair. Unfortunately there is only one hotel room (Room 606) left in the original style. However you can opt to sleep in it if you want and if you can afford it. It is expensive!
Built as the SAS Royal Hotel, the hotel was renamed the Radisson SAS Royal Hotel in 1994, when SAS bought a share in the foreign division of Radisson hotels. When SAS sold their share in 2009, it was renamed as Radisson Blu Royal Hotel, København.
Via Happy Hotelier