The centuries-old trees are draped with Spanish moss to make them look like wizened elders.

Enchanting cave with a river crashing through the roof.

A self-taught astronomer fell in love with the stars and built his own observatory in Colombia.

Colorful lights and mirror-like brine pools create trippy illusions within the historic mine.

This picturesque mansion has gone from opulent ruin to nature museum.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

Banksy gives themself artistic license with this piece of London street art.

Life-sized painted illusions let pedestrians blend in with the street art.

A memorial to the monk who set himself on fire to protest the persecution of Buddhists in Vietnam.

At the center of an island in the middle of the Indian Ocean is a deep chasm ringed by tall waterfalls.

An abandoned outdoor movie theater in the Sinai desert.

A more chill but no less fascinating version of the famous ancient archeological site.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

A fountain standing as a testament to a doomed alliance.

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.

A battle between nature and architecture in the Cambodian jungle.

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

More than 100 Hindu temples are slowly being swallowed by the forest.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.