Extraordinary animals sculpted from leftover junk.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

This circular Iranian jail was once a political prison run by the country's secret police.

The last remaining site of Yoruba worship of the fertility goddess.

The internet as provided by a James Bond villain.

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.

One man's fascination with Turkey led to this backyard mini-city.

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

A museum dedicated to the history of psychiatric treatment featuring a gallery of art made by patients.

Not quite the cultural gateway between China and Sweden its designer imagined.

An ornate Thai pavilion in the middle of Sweden.

Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

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

Part of an abandoned19th-century fortress hides in plain sight inside a modern office building.

This secret facility trained seals for the Swedish navy during the Second World War.

A sixth-century Byzantine cistern hidden below a modern carpet store.

This museum was invented in a novel before being made real by the author.

This eatery re-creates dishes from the Ottoman Empire so you can dine like a sultan.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

3,000 market stands in five former Zeppelin hangars.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

A small museum contains one of the largest collections of ethnic and traditional headgear in the world.