This attraction was abandoned after the Chernobyl disaster.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

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

Video games, body language, and postal history are all on display in this Swiss museum.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

Large Hadron Collider and the Birthplace of World Wide Web.

Caves famous for the dragon-slaying saint who lived there.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

These spooky and unusual stone formations create an underworldly landscape.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The dome-shaped reservoir of this old water tower produces unique acoustic effects.

For a couple of months each year this Swedish city turns into a festive neon phantasmagoria.

From under the bed of one of the co-founders, this server helped launch the notorious file-sharing website.

The single richest source of elemental discoveries in the world.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

Swedish skyscraper with a 90° twist.

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

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

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

20-foot tall lamp mumbles Swedish to celebrate the holidays.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

This Stockholm light tower can be controlled by anyone with a smartphone.

The world's first ice hotel is still one of the most elaborate and beautiful.

The world's largest model of our planetary system.