Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

The lavish, well-preserved home of a wealthy Baba Nyonya family is now a cultural museum.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

This tiny traditional smokehouse is the only one left in this historic fishing port.

On a cornerstone of the City Museum is the head of a monstrous serpent stolen from an Aztec pyramid 400 years ago.

Pettah's beautiful floating market was once a stinky canal in a sketchy industrial area.

A neglected bell tower in modern Colombo is a symbol of the city's colonial past.

The largest mosque in Cambodia was built to unite the country's Muslim community but soon sparked division and controversy instead.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

An abandoned World War II tank left to rust in the downland.

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

A steep and winding road in the Yorkshire Dales passes by these deep natural potholes.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

A World War II torpedo launch station abandoned off the Polish coast.

A Neolithic tomb hidden among a spectacular boulder-strewn stretch of coast.

This French colonial post office is arguably the grandest in all of Southeast Asia.

The remains of a small medieval chapel mark the legendary birthplace of the patron saint of Wales.

A micronation on an islet along the coast of a Portuguese island.

This network of narrow, medieval passages has the most delightful name.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

A superb spot to appreciate the traditional boats of the Indian Ocean.

Before serving as James Bond's Casino Royale, this Victorian-era spa catered to the world's elite.

These barriers stand as stark reminders of Northern Ireland's troubled past.