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

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

Walking through this narrow gorge will make you feel like you've fallen into a fairytale landscape.

Take a schvitz just like an infamous Soviet dictator while his unblinking eye looks on.

The lost American era of gunfighters, bandits, Indians and steam trains is recreated in Sweden.

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

For decades, these ships have been lying in rust awaiting a final decision on their fate.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

From Coke II to Google Glass, this exhibit features some of the most spectacular commercial flops.

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

A former hen house turned curiosity cabinet displays one man's lifelong fascination with cannibalism.

These two springs are tied to several legends, one of which involves the travels of Saint Olof.

The world's only above water sand volcano, believed to once be the bathtub of a priest.

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

Sweden's southernmost point is located in this charming fishing village.

This makeshift concrete bunker is an unusual reminder of the Cold War.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

The glowing blue Nymphaeum of Emperor Tiberius.

The most powerful waterfall in all of Europe.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Where once there was a train station bathroom, there is now this German burger joint.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.