A floating underwater hotel, created by a Swedish artist.

The world's oldest individual clonal tree looks like a wimp despite standing tall for 9,550 years.

It's always game time at Stockholm's only museum devoted solely to video games.

This chimerical bridge/tunnel appears to dead end right into the sea.

A golden egg-shaped sauna in the Arctic tundra.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

Micro-nation based around a nine-story high illegally built tower.

Crooked windswept pines give this old forest an enchanted and magical look.

The internet as provided by a James Bond villain.

A Viking-style brewpub named for a Norse sea giant, in the heart of fjord country.

Drink and dine in a coral cave that's at least 120,000 years old.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

A southern Swedish island is home to the last ERSTA artillery battery, meant to protect the shoreline during the Cold War.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."