Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

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

The forgotten mummies of Dakhla oasis.

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

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

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

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

An abandoned outdoor movie theater in the Sinai desert.

A massive work of modern art that appears to be a crop circle in the middle of the desert.

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

An endless sea of white conical domes.

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

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

An ancient city exhumed from the depths of the ocean.

Rimmed by white crusts of salt on every edge, Lac Assal is one of the saltiest bodies of water in the world.

The "Versailles of the Jungle" built by a dictator is now a decaying shadow of its hubristic grandeur.

This ship carrying cargo and four church bells for the Catedral Metropolitana Nossa Senhora Aparecida ran aground in 1968.

Deadliest lake in the world suffocated over 1,746 people in one night.

There is only one place in the world where the corners of four nations come together.

Did Gustav Eiffel design this enigmatic metal building?

Abandoned ships along a deserted beach feel like the set of a post-apocalyptic thriller.

This dizzying span over the ancient Algerian city was once the highest suspension bridge in the world.

Classical ruins that remember ancient Rome's presence in Africa.

One of the best-preserved impact craters on the planet is located in the middle of the Sahara Desert.