The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

This network of tunnels housed an entire village for years, and even had a hall for screening movies.

An extravagant monument to an extravagantly unpopular Emperor.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

A clay house decorated with ceramic chips in Tianjin.

Home to over 200,000 artifacts, this museum attempts to guide visitors through the ancient history of Beijing and Imperial China.

This working replica of the 'Friends' coffee shop is more accurate to the show than the set itself.

This historical theme park celebrates all things noodle.

A 59-ft. robot statue looks over the citizens of earthquake-ravaged Kobe.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world’s largest work of glass art hides in this stunning Taiwanese subway station.

This collection of lakeside pagodas and temples are flanked by giant lions, tigers, and dragons as well as their welcoming maws.

A memorial to the thousands of political dissidents imprisoned during the 38-year period of martial law in Taiwan.

Visit this church that's shaped like a giant glass pump either to cater to women or to reference a tragic local tale. Or both.

A waterfall runs right through the middle of this Taiwanese shrine to the hundreds of workers killed while building a nearby highway.

An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

The tallest hotel in Europe.

Moscow's imposing monument to the Space Age.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.