19. The Dark Park Hotel, Germany
The Dark Park Hotel in Osterreich has proven to the entire world that people can actually comfortably sleep in real sewage pipes. Founded in 2004, this particular complex has individual accommodations complete with custom murals. They are not overly spacey but unlike other hotels, here you pay what you want.
20. Salt Palace, Bolivia
Last but not least in our list of spectacular hotels, we have the five-star Salt Palace. Ensconced in Uyuni, this surprisingly majestic place was constructed with salt bricks. It also includes salt furniture. Room rates start at $162.00 nightly.
