15 Unusual Hotels Around the World – Sleep in Ice Prisons and Treehouses

Most hotels are designed to disappear quietly into the background of a trip. You check in, sleep, and leave the next morning.

But a small category of hotels flips that logic entirely. The building itself becomes the destination.

Across the world, a handful of properties experiment with architecture, art installations, or unusual concepts that redefine what “spending the night” means. You might sleep on a block of ice, inside a floating capsule, in a prison cell, or in a wooden dog-shaped building.

From a travel planning perspective, these places function less like accommodation and more like experiential attractions.

Below is a structured overview of 15 unusual hotels where the overnight stay becomes part of the story.

Quick Summary Table

Ice Architecture – Hotel De Glace, Canada

In the winter landscape of Quebec City, the seasonal Hotel de Glace functions almost like an architectural experiment.

The entire structure is built using 500 tons of ice and 15,000 tons of snow. Walls, furniture, and even beds are sculpted from frozen materials.

Guests sleep in insulated sleeping bags placed on ice platforms. Tables, chairs, and decorative elements all follow the same frozen aesthetic.

The concept loosely echoes traditional Arctic shelters associated with Inuit culture, though the hotel itself is built using modern engineering techniques.

A Night in a Prison – Karosta Prison Hotel, Latvia

Travelers looking for something psychologically intense often choose Karosta Prison Hotel.

The building originally functioned as a military prison during the Russian imperial period and continued operating until 1997.

Today the structure allows visitors to participate in immersive overnight programs where they experience life as a prisoner.

Rooms resemble cells. Guards enforce strict routines. Guests are treated less like tourists and more like detainees participating in historical reenactments.

Treehouse Architecture – Treehotel, Sweden

In the forests near Harads, architects designed one of the most visually unusual lodging concepts in Europe: the Treehotel.

Rooms sit between 2 and 12 meters above the ground, each designed with a completely different concept.

Examples include:

• A mirrored cube reflecting the surrounding forest

• A room shaped like a bird’s nest

• A futuristic UFO structure suspended among the trees

Guests access their rooms via ladders, stairs, or suspended walkways.

Outdoor activities nearby include fishing, skiing, and boating.

Breakfast with Giraffes – Giraffe Manor, Kenya

One of the most photographed hotels in Africa is Giraffe Manor.

The mansion was built in 1932 and remained abandoned for decades before reopening in 1974.

Its most famous feature is the presence of Rothschild giraffes living nearby.

During breakfast, giraffes often approach the windows and extend their long necks into the dining room, hoping for food from guests.

The property has become a signature stop for travelers exploring East Africa.

Floating Capsules – Capsule Hotel Project, Netherlands

In The Hague, artist Denis Oudendijk transformed survival capsules from offshore oil platforms into a floating accommodation experiment known as Capsule Hotel.

Each capsule measures roughly 4 square meters and is painted bright orange.

Inside, travelers find basic sleeping space and minimal equipment including a chemical toilet.

The project functions as both accommodation and art installation.

A Hotel Built from Salt – Palacio de Sal, Bolivia

Near the Chilean border stands one of South America’s most unusual structures: Palacio de Sal.

The building is constructed almost entirely from salt blocks bonded together using a mixture of salt and water.

Furniture, beds, and decorative elements follow the same material concept.

Guests staying here can also explore the surrounding salt flats, one of Bolivia’s most striking natural landscapes.

Environmental Art – The Garbage Hotel

In Rome and later Madrid, artist Ha Schult created an unusual project known as the Garbage Hotel.

The structure was built using waste collected from European beaches.

The purpose was not luxury accommodation but environmental commentary. The installation aimed to highlight the growing problem of ocean pollution.

Transparent Bubble Rooms – Bubble Hotel, France

In southern France, travelers can sleep inside transparent spherical structures known as the Bubble Hotel.

The inflatable domes are placed in forested areas, allowing guests to see the surrounding landscape directly from their beds.

The concept blends outdoor camping with hotel-level comfort.

Underground Survival Hotel – Grand Canyon Caverns

In Arizona, the Grand Canyon Caverns Suite sits deep underground.

The cavern structure was originally designed with bomb shelter capabilities and can theoretically accommodate up to 2,000 people.

Guests spend the night far below the surface, surrounded by rock formations and artificial lighting.

The Balancing Barn – United Kingdom

In Walberswick, the Balancing Barn demonstrates experimental architecture.

Half the structure rests on land while the other half extends outward into open space.

The building stretches 30 meters and appears to hover above the landscape like a giant seesaw.

A Dog-Shaped Hotel – Bark Park Inn

In Idaho, travelers can stay inside a giant wooden dog at Bark Park Inn.

The bedroom sits inside the body of the structure.

The property also sells dog-themed souvenirs inspired by famous canine characters.

The Human Body Hotel – CasAnus, Belgium

In Belgium, artist Joep van Lieshout created CasAnus, a structure shaped like a giant section of the human digestive system.

Despite the unusual exterior, the interior contains a comfortable double bed, heating, and bathroom facilities.

The project receives tens of thousands of visitors annually.

The Deepest Hotel Room – Sala Silver Mine, Sweden

The Sala Silver Mine Underground Suite offers one of the deepest hotel rooms on Earth.

Located hundreds of meters underground inside a former silver mine, the suite includes a bar, lounge areas, and subterranean chambers.

The Art Museum Hotel – Propeller Island City Lodge, Berlin

In Berlin, the experimental Propeller Island City Lodge features 31 uniquely designed rooms.

Some guests sleep inside coffin-shaped beds. Others stay in rooms where furniture is mounted on ceilings or walls.

The entire hotel functions as an immersive art installation.

The Mouse Experience – La Villa Hamster, France

Opened in 2009, La Villa Hamster offers an unusual concept: guests experience life as a hamster.

Visitors wear hamster masks, crawl through tunnels, and climb onto elevated beds designed like cages.

The concept mixes performance art with accommodation.

Things the Media Doesn’t Tell You

Lists of unusual hotels often emphasize their visual shock value. But from a travel planning perspective, several practical realities matter.

First, many of these properties operate more like attractions than traditional hotels. Some offer only a small number of rooms, which means availability can be limited.

Second, unusual architecture sometimes sacrifices comfort for concept. Sleeping on ice or inside a capsule may be memorable, but it isn’t always luxurious.

Third, the most successful unusual hotels combine design with storytelling. When the concept connects to a location—like wildlife conservation in Kenya or salt landscapes in Bolivia—the experience feels more meaningful.

Understanding these details helps travelers choose which unusual hotel actually matches their travel style.

15 Bizarre Hotels Travelers Actually Sleep In – A Planner’s Global Guide.

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