Under Hanoi’s medieval citadel sits a secret military headquarters from the final years of the Vietnam War.

A gift from the Soviet Union in the 1980s, this is the only statue of the Soviet dictator in Southeast Asia.

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

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

This museum offers a glimpse into early 20th-century Glasgow life.

Inscribed on the gate are the names of 29 figures from the University's first five centuries.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A jazz band formed by African water animals in the heart of Flemish Brabant.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

A giant bug impaled on a 75-foot-tall needle.

A huge old mansion full of thousands of toys, each there to be used and played with.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

This natural wonder is disappearing at an alarming rate.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

On this stunning Scottish island, you can walk in the footsteps of dinosaurs.