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

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

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

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

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

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

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

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.

An alien landscape of chalk-rock in the Egyptian desert.

An endless sea of white conical domes.

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

Ozymandias’ time-keeping temple.

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

A salt lake dotted with steaming limestone chimneys.

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

One of the last refuges of the endangered eastern lowland gorilla.

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

The world's only facility where orphaned mountain gorillas are cared for.

The most biologically diverse protected area in Africa is also the most dangerous.

Home to pygmy hunter-gatherers, hundreds of animal and bird species, and the strange okapi, or forest giraffe.

Mount Nyiragongo has erupted at least 34 times since 1882 and is home to the world's largest lava lake.

Once a bustling fishing village and trading post, today these Cape Verde ruins provide a home only for seabirds and turtles.

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