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

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The indecision over what to place in this square was immortalized with a plaque.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

France's most famous cemetery, with some of its most curious tombs.

This enormous World War II relic is one of the largest wooden structures in the world.

A very tiny church, bisected by a now-dead oak tree and marooned in the middle of a shopping center parking lot.