Top 5: Unusual hotels

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Unusual hotels: Das Park Hotel, Austria

Das Park Hotel offers cheap and quirky pipe rooms
Das Park Hotel / Dietmar Tollerian

Located a few feet from the Danube River in Austria, Das Park Hotel is the only hotel in the world to offer rooms in drain pipes. Although basic, the interior is unexpectedly comfortable with double bed, woolly blanket and cotton sleeping bag. You'll have to walk a bit to get to the toilets and showers but the best thing about this place is that a night only costs as much as you want to pay. From May to October only.

Unusual hotels: Dog Bark Park Inn, Idaho, USA

Yes, this giant dog is also a cosy B&B
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You'll find yourself in the doghouse at this quirky, American B&B. Husband and wife team Dennis Sullivan and Frances Conklin have created the most unlikely of accommodation inside a giant, wooden beagle. At Dog Bark Park Inn, family-friendly accommodation is arranged within the dog's body, with added sleeping room in the head (where you'll find dog-shaped cookies on the pillow) and, yes, bathroom facilities under the tail.

Unusual hotels: The Roundhouse, UK

The Roundhouse in Cornwall is full of history
Canopy&Stars

Perfect for couples, this Iron Age roundhouse offers plenty of romance and adventure in enclosed moorland in Cornwall. Tell stories by the open fire and spend the night tucked up in Egyptian cotton sheets in your handmade four-poster bed with lights woven into the willow headboard. After breakfast in the Garden Quarters a few steps away, get ready to stroll across the moors to one of the many stunning beaches nearby.

Unusual hotels: Treehotel, Sweden

Hide in the mirror cube tree house in Sweden
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Nestled within the Boreal forests of northern Sweden are six unique tree houses. But these are not the tree houses you made as a child; these are architecturally designed wonders such as a mirror cube, a bird's nest, a UFO, a cabin and a blue cone. There is even a sauna perched high in the treetops. During your stay at Treehotel, explore a range of outdoor activities in the tranquil forest surrounding the village of Harads.

Unusual hotels: Capsule Hotel, Netherlands

Sleep in your own survival pod in The Hague
Capsule Hotel

These former oil rig survival pods, moored in The Hague, come with disco mirror ball, fairy-light decorations and silk-lined sleeping bags. Originally built in 1972, the Capsule Hotel's pods are just over 4m (13ft) in diameter and unaltered apart from the addition of a lock on the outside and an ‘emergency' chemical toilet inside. While not everyone's luxury choice, each pod provides a quirky refuge for up to three people.

For more unusual hotels around the world, check out: www.unusualhotelsoftheworld.com.