Slum Settlement Filled With Mountains of Garbage.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

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

An endless sea of white conical domes.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

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.

Charnel house at the foot of Mount Sinai.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The romance of early commercial flight still fills this Art Deco destination.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

At 207 feet, one of the world's longest continuous escalators.

Right next to departures—how convenient!

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.