It seems hardly a week goes by without Air BnB opening another cool and quirky space to lay your head, whether it’s in a shark tank, Olympic stadium or Guinness’ 360 bar, but it’s not just the community marketplace giant that is getting creative with their offering!

We’ve rounded up some of the quirkiest hotels on Earth and whilst it’s not always possible to transplant bricks and mortar into a whole new world, there are still lessons to be learned for hoteliers and Travel PRs alike from the creativity on display below.

1. Lifeguard Hotel – Tel Aviv

Hotel group Brown co-produced this lifeguard station-turned-hotel, decorated with Israel-inspired graffiti from local street artist Edgar Rafael and with interior design by Aline Langlieb. 15 couples can win a night in the hotel via a competition on and Instagram.

2. Palacio de Sal – Bolivia

Similar to the ice hotels in Sweden, Canada, Japan etc. that have sprung up in the colder reaches of the world, this hotel on the shore of the Great Salar de Uyuni in Bolivia is made entirely from white rock salt.

3. Poseidon Undersea Resort – Fiji

Guests at this hotel can feed the fish swimming past your ‘window’ whilst enjoying all the comforts of a five-star hotel. The suites are 40 feet below the surface of the Fijian Lagoon and offer some incredible, if unconventional, views.

4. Treehotel – Sweden

The pine forest around Harads, in Norbotten County, is home to seven individual ‘treerooms’ all with different names and themes. There’s the Cabi (a modern glass capsule), the Bird’s Nest, the reflective Mirrorcube and the UFO (see image below). Guests can also unwind in a Tree Sauna.

5. Utter Inn – Sweden

Staying in Sweden, the ‘Otter Inn’ sits in the middle of Lake Mälaren and is the creation of Mikael Genberg. Once you’ve entered the picturesque little cottage, steps take you down to an underwater bedroom with panoramic windows.

6. No Man’s Fort – England

This Victorian-era fort was built in the middle of the Solent river, between 1867 and 1880 to protect Portsmouth from Napoleon III. It has now been transformed into a grand hotel complete with lighthouse penthouse suite, nightclub, hot tub and our personal favourite – a laser quest arena.

7. The Dog Bark Park Inn – USA

The Idaho flag sports an elk (which are protected by law in the state) but it’s the beagle that reigns at The Dog Bark Park Inn. Chainsaw artists created a 12-foot beagle to accommodate dog-loving guests. The inn sleeps four, plus of course any four-legged friends!

8. Null Stern Hotel – Switzerland

Again the art concept and travel worlds combine with this wall-less room on a mountain in Graubünden. It’s only available seasonally, but it takes wild camping to a whole new level.