This man-made mound monument was built out of soil from all across the Polish empire.

This 13th century Gothic brick castle is the largest in the world by surface area.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Slum Settlement Filled With Mountains of Garbage.

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

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

The forgotten mummies of Dakhla oasis.

The deadliest diving spot in the world is also a stunning geological marvel.

A preserved oasis with traditional Andalusian-style architecture and beautiful views of the Nile.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

In Egypt's expanding metro area, many of the neighbors are dead.

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

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

An abandoned outdoor movie theater in the Sinai desert.

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

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

Ozymandias’ time-keeping temple.

An ancient city exhumed from the depths of the ocean.