Caves that can't seem to quit producing the remains of prehistoric humans.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

Nelson Mandela lived here with his family from 1946 until his arrest in 1962.

According to legend, this ancient column contains healing properties.

The home of Greece’s national poet sits crumbling in the middle of a popular tourist district.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

The ruined doorway is a portal to the building's turbulent and torturous past.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

An ancient octagonal weather station named for the eight Greek gods of wind.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says this sacred tree was a gift from goddess Athena.

These caves secretly held national treasures during World War II.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

A sharp sculpture made of thousands of pieces of jagged glass.

Large collection from the 3rd millennium BCE.

A statue in the Texas town that proudly calls itself the killer bee capital of the world.

This historic national park is covered in the stunning ruins of red rock pueblos.

A self-built castle made by a mysterious man.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

This pagoda was once the central feature of a Buddhist temple that no longer exists.