Overwater villa with a curved water slide and retractable roof at Soneva Jani in the Maldives
Editorial Collection · 8 Stays · Verified, with honest notes

The Most Unusual Luxury Hotels in the World (2026)

Underwater, cave, ice, treehouse, lighthouse and private island — extraordinary stays that genuinely exist nowhere else.

The short answer: the most unusual luxury stay on earth is The Muraka at Conrad Maldives, where you sleep five metres under the sea beneath a 180-degree dome. Around it sit a Swedish ice hotel rebuilt every winter, a Cappadocian cave monastery, a mirrored treehouse, a converted lighthouse and Richard Branson's private island. All eight below are real, operating and verified — with honest notes on what each is actually like.

By the Hotels for Kings Editorial Team · Last updated: May 31, 2026

We may earn a commission when you book through links on this page, at no extra cost to you. This collection is editorial — we never accept payment for placement. Every property is real and operating; details are verified against the hotels' own information and named reporting.

The collection at a glance

StayWhereWhat makes it unusual
The MurakaMaldivesBedroom 5 m under the sea
Argos in CappadociaTurkeyRestored cave monastery
IcehotelSwedenRebuilt from river ice each winter
TreehotelSwedenMirrored cube in the pines
Necker IslandBVIBranson's private-island buyout
Faro Capo SpartiventoSardiniaA working-era lighthouse
Soneva JaniMaldivesRetractable roof + water slide
KeemalaPhuketBird's-nest & tree pool villas

How we chose

This is a curated collection rather than a strict ranking — eight genuinely distinct kinds of extraordinary stay, one per category, chosen so that no two repeat the same trick. To make the cut a property had to be (1) real and operating in 2026, (2) verifiably one-of-a-kind in its format, and (3) a true luxury stay, not a novelty with a minibar. We list the underwater suite first because it is the rarest format on earth; the rest are ordered by how unusual the core experience is, not by price. Where a stay is seasonal or buyout-only, we say so.

The eight

1
Maldives · Underwater

The Muraka — Conrad Maldives Rangali Island

Sleep five metres below the lagoon
Overwater and undersea villa at Conrad Maldives Rangali Island, home to The Muraka underwater bedroom

Why it leads: opened in 2018, The Muraka was the world's first undersea residence and is still the only place you can fall asleep watching reef sharks glide overhead. Its master bedroom sits about five metres beneath the Indian Ocean inside a 180-degree acrylic dome; two further bedrooms, a pool, gym and infinity deck sit above water. The rate includes a private chef, butler and boat.

Who it's for: a singular honeymoon or milestone, paired with the resort's overwater villas. Honest note: the underwater bedroom is unforgettable but compact and dim by design — most guests split nights between it and the upper rooms.

Source: South China Morning Post; Conrad Maldives.

Read our Conrad Maldives review →
2
Cappadocia, Turkey · Cave

Argos in Cappadocia

A luxury hotel inside a cave monastery
Restored stone cave dwellings and terraces of Argos in Cappadocia overlooking the Pigeon Valley in Uchisar

Why it's here: Argos was rebuilt over 14 years from the ruins of an ancient monastery and Silk Road way-station in old Uchisar, preserving genuine cave dwellings and underground tunnels. Its 51 rooms are spread across nine historic mansions, many with private terraces facing Mount Erciyes; the wine cellar of nearly 22,000 bottles fills a network of original caves. From the terrace you watch dawn balloon flights lift over the valleys.

Who it's for: travellers who want history and landscape, not just a gimmick. Honest note: cave rooms mean fewer windows and uneven, ancient steps between levels — atmospheric, but not step-free.

Source: Argos in Cappadocia; Mr & Mrs Smith.

Read our Argos review →
3
Jukkasjarvi, Sweden · Ice

Icehotel

Rebuilt from river ice every winter

Why it's here: the world's first ice hotel, sculpted afresh each winter from around 5,000 tonnes of ice and snow harvested from the frozen Torne River. Roughly 50 artists design one-of-a-kind suites, an ice church and the ICEBAR, so the hotel is a different building every year and melts back into the river each spring. A smaller, solar-cooled Icehotel 365 keeps a handful of art suites open year-round.

Who it's for: a once-in-a-lifetime Arctic night under reindeer hides, paired with the northern lights. Honest note: the cold rooms hover around −5°C — it is genuinely one thrilling night, not a week; book a warm room for the rest of the stay.

Source: Visit Sweden; Icehotel.

See more cold-weather luxury →
4
Harads, Sweden · Treehouse

Treehotel

A mirrored cube hidden in the pines

Why it's here: a cluster of architect-designed treehouses 60 km south of the Arctic Circle, each a different built fantasy: the Mirrorcube, clad entirely in mirrored glass that vanishes into the forest (with a bird-safe infrared film in the panes); the Bird's Nest, a cocoon of timber branches; the disc-shaped UFO; and the 7th Room, a cabin on stilts with a netted terrace under the aurora. No trees were felled to build them.

Who it's for: design pilgrims and northern-lights chasers who want the forest, not a resort. Honest note: remote — you fly to Lulea and drive — and the rooms are small by design; the architecture is the luxury, not the square footage.

Source: Designboom; Audley Travel.

See more design-led hotels →
5
British Virgin Islands · Private island

Necker Island

Rent a whole island from ~$77,500/night
Richard Branson's Necker Island in the British Virgin Islands with the Balinese-style Great House above the beach

Why it's here: Richard Branson's 74-acre private island, run as an exclusive-use retreat by Virgin Limited Edition. On a full buyout it sleeps up to around 48 guests across the Balinese Great House and a scatter of beachfront houses, with a staff-to-guest ratio that approaches one to one, two beaches, tennis, and a famously sociable host culture. Whole-island rates start around $77,500 a night.

Who it's for: multigenerational celebrations and friend groups who want an entire island to themselves. Honest note: the magic is the buyout; solo couples should target a "Celebration Week," when individual rooms are sold and you share the island with others.

Source: Virgin Limited Edition; Wikipedia.

Read our Necker Island review →
6
Chia, Sardinia · Lighthouse

Faro Capo Spartivento

A lighthouse turned tiny luxury hotel
The converted Faro Capo Spartivento lighthouse on a clifftop promontory above the sea in southern Sardinia

Why it's here: a former lighthouse on a promontory in the far south of Sardinia, near the beaches of Chia, converted into one of Italy's most exclusive small stays. There are only a handful of suites between the lighthouse itself and the old keepers' lodge, an infinity pool and Jacuzzis cantilevered over the sea on a wooden platform, a private chef who cooks to your taste rather than a fixed menu, and a 360-degree panorama from the tower.

Who it's for: couples who want true seclusion and a sense of place over a big-resort programme. Honest note: with so few rooms it sells out far ahead in July and August — and it is deliberately remote.

Source: Faro Capo Spartivento.

Read our Faro Capo Spartivento review →
7
Maldives · Overwater

Soneva Jani

Retractable roof and a slide into the lagoon
Large overwater villa at Soneva Jani with a curved water slide and pool over the turquoise lagoon

Why it's here: the villa that reinvented the overwater format. Most of Soneva Jani's villas — among the largest in the world — have a retractable roof over the master bed that slides back at the push of a button for stargazing, a curved water slide that drops you straight into the lagoon, a private pool, sunken lounge and catamaran nets. The resort also runs an overwater observatory and silent open-air cinema.

Who it's for: families and couples who want the playful, barefoot-luxury end of the Maldives. Honest note: the slide-and-roof theatrics are the draw, but they push rates to the top tier — and the lagoon location means no house-reef snorkelling straight off the deck.

Source: Soneva; Mr & Mrs Smith.

Read our Soneva Jani review →
8
Phuket, Thailand · Nest villas

Keemala

Bird's-nest and tree pool villas in the hills
Woven Bird's Nest pool villa elevated among the trees in the hills above Kamala at Keemala, Phuket

Why it's here: a hilltop fantasy above Kamala built around four invented "clans," each with its own villa style: 38 private-pool villas split between earthy Clay Pool Cottages, nomadic Tent Pool Villas, suspended Tree Pool Houses, and the woven, cocoon-like Bird's Nest Pool Villas — the most expansive, at around 185 square metres each. Every villa has its own pool and a view over the rainforest canopy.

Who it's for: a tropical counterpoint to the Nordic treehouse — the same fairy-tale idea with warm-water swimming. Honest note: it is in the hills, not on the beach; you shuttle down to the sea, which buys the jungle privacy in exchange.

Source: Keemala; CLADglobal.

Read our Keemala review →

How to actually plan an unusual stay

One rule covers all eight: book the unusual stay short, and a comfortable base around it. An ice room is a single magical night, not a week; an underwater bedroom is best as one or two nights inside a longer Maldives trip; a private-island buyout only makes sense with a group to fill it. The most common mistake is over-committing to the gimmick and under-planning the rest of the holiday around it.

Seasonality is the other trap. The Icehotel exists only from December to April, Sardinia's lighthouse and the Maldives villas are summer-and-shoulder propositions with very different rates by month, and Cappadocia's famous dawn balloons depend on weather. Confirm dates and what is actually open before you fall for the photographs.

Frequently asked questions

What is the most unusual luxury hotel in the world?
For sheer novelty, The Muraka at Conrad Maldives Rangali Island — the world's first undersea residence, where the master bedroom sits about five metres below the lagoon under a 180-degree acrylic dome. Close behind are Sweden's Icehotel, rebuilt from river ice every winter, and Argos in Cappadocia, a luxury hotel inside a restored cave monastery.
Can you really sleep underwater in the Maldives?
Yes. The Muraka at Conrad Maldives Rangali Island has a master bedroom set roughly five metres beneath the surface, enclosed in a 180-degree acrylic dome so you fall asleep watching reef fish and rays. It is a private two-level villa with two further bedrooms above water, a chef, a butler and a boat.
Is the Swedish Icehotel rebuilt every year?
Yes. The Icehotel in Jukkasjarvi is sculpted fresh each winter from around 5,000 tonnes of ice and snow taken from the Torne River, with roughly 50 artists designing unique suites. The seasonal hotel exists only from December to April; a smaller, solar-cooled Icehotel 365 stays open year-round.
How much does it cost to rent Necker Island?
Richard Branson's Necker Island in the British Virgin Islands rents on an exclusive-use basis from roughly $77,500 a night for the whole island, which sleeps up to about 48 guests across the Great House and Balinese houses. On selected Celebration Weeks you can book individual rooms instead of the full buyout.
What is a cave hotel and is it comfortable?
A cave hotel is built into rooms carved from soft rock — in Cappadocia, often genuine centuries-old dwellings. Argos in Cappadocia restored an ancient monastery and Silk Road way-station into 51 rooms with private terraces and a 22,000-bottle cave wine cellar. The stone keeps interiors naturally cool in summer and warm in winter; the trade-off is fewer windows and uneven steps.
Which hotel villa has a retractable roof and a water slide?
Soneva Jani in the Maldives. Most of its overwater villas have a retractable roof over the master bed that slides back for stargazing, plus a curved water slide straight into the lagoon, a private pool and catamaran nets. They are among the largest overwater villas in the world.
Are unusual hotels worth the money?
For one or two nights as the centrepiece of a trip, yes — the experience genuinely does not exist elsewhere. The honest caveat is that novelty fades: an ice room is a thrilling single night but a cold one, and an underwater bedroom is best paired with normal villas for the rest of a stay. Book the unusual stay short, and a comfortable base around it.
Can you stay in a lighthouse hotel?
Yes. Faro Capo Spartivento in southern Sardinia is a working-era lighthouse converted into a tiny luxury hotel of a few suites, with a clifftop infinity pool over the sea, a private chef and a 360-degree panorama. Its scarcity — only a handful of rooms — is the point, so it books up far ahead in summer.

Editor's pick: see also the world's most exclusive hotels — the hardest addresses on earth to book.