Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A place as enchanting as the journey to reach it is harrowing.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

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.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

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

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

A statue honors the children who fought Nazis in Poland.

An underground city of salt.

This sensational Chinese temple walks visitors through the 76 weird departments of the afterlife.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Iran's colorful terraces are a rare geological masterpiece.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

This Chinese museum proves that it's a watermelon world, we're all just living in it.