This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large part in Dublin.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

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

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

This Vietnamese bar doubles as a multistory labyrinth.

Where an entire elephant skeleton, a snakeskin table runner, and thousands of animal remains become art.

Derelict airplane bodies serve as both home and income for three Thai families.

Walk through depictions of the torture inflicted on those who go to Buddhist hell.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

A limestone wonderland of water and subterranean secrets.

Stunning wetlands ablaze with pink lotus flowers.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.