The narrowest street in Paris.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

The world's oldest known salt mine.

Visitors dip into a variety of pools of what was once ice.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

This modern labyrinth lies in the shadow of a ruined medieval castle.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

A Japanese video game arcade hides in the back of a Swedish pool hall.

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

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

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

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

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

This fantastical icy castle is built anew every winter.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The house that took a plunge into the facade of a museum.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.