Travel with a twist: the world's most unique hotels

We have all had the conversation with partners, friends or family about where we should go on our next holiday. Going to the popular tourist resorts can be relaxing, fun and affordable - but that’s not always what we’re looking for.

HELLO! Online has discovered some of the most incredible and original lodgings around the globe. If you want something truly unique from your next vacation, forget the typical bed & breakfast or regular hotels.

You could be sleeping in reindeer skins in a Swedish ice hotel or napping in the treetops of Catalonia in a Spanish treehouse resort. For the fearless traveller, you can enjoy a stay at the world’s deepest hotel room in a Swedish mine suite. If you are a traveller who would rather be underwater than underground, then you can check out the Maldives resort that offers an underwater hotel suite. Alternatively, there is the fascinating Turkish cave hotel of Gamirasu which is on the site of a one thousand year old Byzantine monastic retreat.

Step through the doors of these amazing establishments with these stunning photos...

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Cabanes Als Arbres, Spain
One, two, tree...
If you’re fed up of keeping your feet on the ground then we have just the place for you, in the woodlands of the Catalonian countryside. Cabanes Als Arbres (“Huts in the trees”) offers you a place to stay where you will be at one with nature, the trees and their ecosystem. In this Spanish treehouse hotel resort you can enjoy nesting among the foliage in one of the series of treetop cabins, the ultimate rural accommodation / / © Luis Salinas  

Cabanes Als Arbres Cabin, Spain
In order to preserve the tree and its natural surroundings, the huts do not have electricity or running water but there is a nearby main hut that is equipped with parking, reception, canteen, living room, showers, swimming pool and garden / / © Luis Salinas 

Ice Hotel Reception, Sweden
Ice ice baby...
The world famous Swedish Ice Hotel in Jukkasjärvi will be opening for the 23rd time in Winter 2012. The hotel in the heart of Lapland is constructed entirely from ice and has grown from an original 60m2 igloo to the 5500m2 luxury hotel that it is today / / © 

Ice Hotel, Sweden
At night you can curl up in bed in the warmth of authentic reindeer skins that function as bed clothes - though remember to still pack your thermals! / / © / Javier Opazo, Jens Thoms Ivarsson, Mats Nilsson, Ethan Friedman 

Ithaa, Conrad Rangali Island Resort, The Maldives
Sleep with the fishes...
If a luxurious underwater experience is more up your street, you may want to check out the Conrad Rangali Island Resort in The Maldives. This Conrad resort can offer you a little taste of what it might be like to live under the sea. Their underwater restaurant, Ithaa, can be converted into a bedroom suite if required, though it usually functions as a restaurant where you can dine under the ocean, admiring the local marine life whilst enjoying the chef’s exquisite culinary creations / / © Conrad Hotels & Resorts 

Conrad Rangali Island Resort, The Maldives
The resort is set on two private islands among the stunning white sand beaches, unspoilt coral reef and lagoon. In addition to the incredible surroundings, the hotel boasts 50 luxury water villas, 79 exotic beach villas and 21 spa water villas with private treatment rooms / / © Conrad Hotels & Resorts 

The Mine Suite, Sala Silvergruva, Sweden
Going deeper underground...
Not one for the claustrophobic travellers, The Mine Suite of the Sala Silvergruva (“Silver mine”) in Sweden is officially the world’s deepest hotel room, situated at a depth of 155m underground / / © Lasse Fredriksson & Pappilabild 

The Mine Suite, Sala Silvergruva, Sweden
On arrival, you are given a tour of the subterranean facilities before being left to enjoy a personal refreshments basket and the silence and tranquility of the mine. You are provided with an intercom radio to communicate with staff throughout your stay, as mobiles don’t work underground / / © Pappilabild 

Giramisu Cave Hotel, Turkey
Cosy cave dwelling...
is an exquisitely restored 30-room Turkish cave hotel which opened 1999, in Ayvali Village near Urgup in the heart of the city of Cappadocia, Turkey. This unusual hotel has become particularly popular as a romantic escape for honeymooners and holidaying couples, but is a great venue whatever your holiday type / © 

Giramisu Cave Hotel, Turkey
The Gamirasu Cave Hotel is located in a restored one thousand year old Byzantine monastic retreat which offers modern conveniences without distracting from the spiritual feeling of the area which is known to have been inhabited for more than five thousand years. They give a whole new meaning to the term cave-dwelling, and they do it in great style / ©