There are often medieval banquets on Saturday evenings (also available upon request).
Rates start at $28 for Jan. 1.
13. Hostel Brumund, Brumunddal, Norway
Hostel Brumund is two separate treetop huts. The Pine Hut, the original, was built in 2006. It is the smaller of the two, squeezing in five people. It sits about 25 feet above ground in a 250-year-old pine tree (hence the name).
The Larch Hut was built in 2009, modeled essentially on the Pine Hut but just a bit bigger. This cabin has room for six people. The porch offers a view of a nearby lake.
Rates start at $164 for Jan. 1.
14. Jumbo Stay Hostel, Stockholm
This is a real retired Boeing 747-200 Jumbo Jet that opened as a hostel in January 2009 at Arlanda Airport in Stockholm. Oscar Dios, the creator of the Jumbo Stay, squeezed 25 rooms with 85 beds inside the plane.
For those willing to spend some extra cash, the cockpit has been turned into a suite, with views of the airport's runway.
Rates start at $57.36 for Jan. 1.
15. Zhangzhou Wei Qun Lou Inn, Zhangzhou, China
The Zhangzhou Wei Qun Inn, in Fujian province, makes the list based on its appearance alone. Reviewers say it's like a UFO. At night, lanterns hang on each floor, lighting up the building with a red glow.
Rates start at $7.50 for Jan. 1.
16. Travellers' Cave Pension, Goreme, Turkey
Sleeping in a cave can be comfortable. Traveller's Cave Pension offers cave rooms as well as fairy chimney rooms (the local name for small, protruding rock formations).