This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

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

A former suicide bridge is now accumulating symbols of love instead of a body count.

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

One woman's dream became a train hotel in her backyard.

Stay in a room with a view... of the bottom of the ocean.

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.

A floating underwater hotel, created by a Swedish artist.

An underwater city for the dead.

Commonly acknowledged as the only public monument to the Devil himself.

This futuristic German television spire is actually the world's largest digital clock.

Repurposed space and ultra-modern construction collide to create this geometric wooden spectacle.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

One of the largest underground systems runs under Canada's largest urban center.

Secret Swing.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

This plaque tells the story of an event that took place in an imagined parallel universe.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

A small chapel celebrating the spiritual bond between dogs and humans.