Most people look for comfort and luxury when selecting their hotel rooms.  However, there are a select few who wish for something more. I?m not sure  whether these hotel rooms are what they had in mind but they will certainly  provide you with the experience of a lifetime. Read on to find out more about  the World?s Weirdest Hotel Rooms!
1) Sala Silvermine This is the world?s deepest bedroom. Sweden?s historic Sala Silvermine hotel  offers a room that is 155 meters below the ground. It is one of the World?s best  preserved mine settings. Experience the dark winding galleries, massive caverns  and magic lakes. The underground setting is out of this world. Be careful to  take warm clothes though, as the bathrooms are only 2 degrees Celsius!

  2) Holiday Out Hotel
 The holiday out hotel has been specially made to accommodate the vast amount of  spectators of the 2012 Olympics held in London. The hotel rooms are suspended  tents located very close to the Olympic Park site in the Wick Community  Woodland. While it won?t provide 5 Star accommodations, it will certainly be an  experience and a great low-cost choice.

 3) The Mirror Room
 Propeller Island City Lodge, located in Berlin, Germany is an usual hotel with  artistic rooms. One of these is the Mirror Room. It is constructed in a diamond  shape and is surrounded by mirrors, giving guests the impression of being inside  a kaleidoscope.

 4) Ice Hotel
 This beautiful hotel is perfect is you like cold temperatures. Situated in  Sweden, the water from a river running near the hotel is used to create the  hotel every year! It became as an igloo and is now the World?s largest hotel of  ice and snow at about 5500 square metres.

 5) Sewer Pipe Hotel Room
 The Das Park Hotel at Ottensheim, Austria has transformed sewer pipes into hotel  rooms. It is one of the smallest hotels in the world, offering tiny rooms made  from 10-ton segments of drainage pipes. The bathrooms are shared but the guests  get to pay whatever they want.

 6) The Upside Down Hotel Room
 This room is again found in the Propeller Island City Lodge. Designed by German  artist Lars Stroschen, this room is made to alter the guest?s perceptions of the  world by turning it completely upside down! It is outfitted with furnishings  that hang from the ceiling. The guest?s sleep in comfortable ?boxes? beneath the  floorboards.

 7) Sand Hotel
 The world?s first sand hotel was constructed in 2008 on this English beach in  Dorset. It weighs 1000 tons and costs just $21 a night. Guests can relax in one  of the twin or double bedrooms while enjoying an unobstructed view of the night  sky. The only problem is when you need to go the restroom?as there are none in  this hotel. Moreover, it only lasts till it rains and is remade every year.

 8) The Fold-up Hotel
 This unique hotel was launched in Eindhoven, The Netherlands in 2009. These  folding hotel rooms are designed by Hubert von Heijden and can be rented to  organizations that want to use the rooms for guests, staff or  festival-employees.

 9) The Prison Cell Hotel Room
 Ever wondered what it looks like inside a prison? Well, wonder no more. This  spooky room at the Propeller Island Hotel is a re-created prison cell. To make  it even more authentic, it even has an exposed toilet in the center of the room.

 10) Jules Undersea Lodge
 Named after the author of the framed maritime tale 20,000 Leagues Under the Sea,  Jules Undersea Lodge is the World?s first underwater hotel. It was originally  built in the early 1970?s as a groundbreaking research lab off the coast of  Puerto Rico, the Lodge has been in business in Key Largo, Florida since  relocating there and opening to the match in 1986. However, you must be a  certified scuba diver to enjoy this.
