The largest public library in the United Kingdom was designed to reflect the industrial and artistic history of the city where it stands.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

A 19th-century funicular railway shuttles visitors up this surprising sea cliff to one of the world's largest camera obscuras.

In 1977, an eccentric book lover formed a micronation for book lovers.

The unusual stilted beacon is the town's only active lighthouse.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

These murals stand as reminders to the troubled history of this Northern Ireland city.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

Khmer Rouge's high security prison.

Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.

5,000 skulls in memorial to those killed by the Khmer Rouge.

A secluded, little-known temple hidden amid the dense jungle.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

A small 12th-century temple surrounded by waters believed to have curative properties.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

A quick and simple solution to Cambodia's train woes.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

High winds can make this one scary landing.