http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/dog-bark_1250066i.jpg
The Dog Bark Park Inn, Idaho, USA
Sleeping in the doghouse is no bad thing at this bed & breakfast, imaginatively set inside a 12ft beagle. Created by a pair of "chainsaw artists", the lodgings benefit from a cozy alcove in the dog's muzzle.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/old-jailext_1250128i.jpg
The Old Jail, Mount Gambier, South Australia, Australia
Independently minded travellers who yawn in the face of "bright, airy and spacious" should check out this budget hostel.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/coffin-room_1250050i.jpg
Gruft - Propeller Island City Lodge, Berlin
Deep sleepers should perhaps avoid the Gothic beds at this unique hotel in Berlin – or just opt for a less terrifying bed in the "labyrinth" part of the room below.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/celica-cell_1250078i.jpg
Hostel Celica, Ljubljana, Slovenia
Travellers who want jailtime without compromising their sense of style should also check out the clean lines (well, there are lots of bars) at this converted prison in Slovenia.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/lions-cages_1250379i.jpg
Two Lions - Propeller Island City Lodge, Berlin
The hotel offers themed abodes ranging from the tame to the extreme. The Two Lions room, complete with cages, has a two-way mirror into the next room for real exhibitionists.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/upside-down_1250053i.jpg
Upside Down - Propeller Island City Lodge, Berlin
The rooms are created by German artist Lars Stroschen with the aim of altering guests' perceptions, something this "upside-down" room certainly achieves.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/nucelar-bunker_1250052i.jpg
Wrapped - Propeller Island City Lodge, Berlin
Other rooms in this "living work of art" allow guests the chance to sleep in a padded cell, under Nordic runes, or down a mine shaft.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/magic-mountain_1250126i.jpg
Magic Mountain Hotel, Panguipulli, Region X, Chile
Or how about a stay underneath a cascading waterfall on a fairytale mountain that, legend has it, can grant you wishes? An aerial ropeway takes you between tree-tops in the surrounding forest canopy.

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/crane-hotelext_1250080i.jpg
Crane Hotel, Harlingen, Netherlands
When choosing a hotel conversion, a shipping crane is unlikely to be the first option that springs to mind....

http://www.telegraph.co.uk/telegraph/multimedia/archive/01250/crane-hotelint_1250082i.jpg
Crane Hotel, Harlingen, Netherlands
But with a swish interior, rotating sea views and splendid sense of isolation, you can forgive this hotel's less-than-glamourous dockside location.