A nightly tradition fills the streets of Flogsta with a collective scream.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

A subterranean house of worship carved right out of the bedrock.

340-foot statue built to honour the Heroes of the Soviet Union.

The deepest metro station in the world.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This attraction was abandoned after the Chernobyl disaster.

From the Difference Engine to the Cray-1, all under one roof.