A remarkable geological formation resembling a forest made of stone.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

Mesoamerican monoliths and zoomorphic stones covered in royal visages, ancient mythology, and grand celestial events.

A ruined Maya city that suffered a years-long case of mistaken identity.

One of the world's largest pyramids stands within El Mirador, the "lost city of the Maya."

Hundreds of thousands of ancient documents offer a unique glimpse into Jewish life in Cairo.

Part shoe store, part sociopolitical art gallery, part zoo.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

The once great capital of Egypt now crumbles forward as evocative ruins.

The largest known Ancient Egyptian obelisk.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

One of the most well-preserved temples of ancient Egypt.

An endless sea of white conical domes.

An ancient city exhumed from the depths of the ocean.

In between two buildings in Ljubljana, medieval tunnel to nowhere.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

Apparently, Hell has waterfalls in Slovenia.

A crumbling World War I fort that is reached through a series of concrete tunnels.

A miniature train-ride through Slovenia's largest cave system.