For centuries young Thai men used this Giant Swing as a slingshot to heaven.

Roman ruins top white travertine terraces formed by ancient hot springs.

After this one-of-a-kind palace was built the architect's hands are said to have been cut off to keep it that way.

These jagged limestone blades cut out through the canopy of the jungles of Borneo.

Little island known for its massive beachfront "flowerpot" pillars.

Walk into the 19th century without leaving Brooklyn.

Resonant stone, that has been played since prehistoric times.

Home of the infamous Rug Man of Doha.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Plot your trip through the city on the sidewalk.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

A marvel of Byzantine engineering under the streets of Istanbul.

One of the largest underground systems runs under Canada's largest urban center.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

These Stalin-era industrial 'death traps' hang lifeless above the city

Riding on a pair of architectural dragons, this Thailand temple holds murals full of lurid imagery.

Small church on top of a huge rock column.

This crocodile-infested East Timor reservoir is also home to a spectacular half-sunken forest.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Famously misunderstood wonder of the ancient world

England's oldest surviving hedge maze has been confusing visitors for over 300 years.