A nightmare for the claustrophobic lies hidden in Southeast Asia.

Khmer Rouge's high security prison.

One of the biggest markets in Asia, under one of the continent's largest domes.

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

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

A monolithic monument in Greater London.

Abstract dinosaur models in London.

The remains of a historic football stadium that once hosted 50,000 spectators.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

A 142-foot-tall Q-tip on Bristol's skyline.

Banksy's image of a naked man dangling from the window of a sex health clinic.

The Bristol Camera Obscura housed in an ancient windmill.

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

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

An unusual round church in London with a Templar past.