Road signs in Namibia mark the location of one of the five major circles of latitude.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

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

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

This former medieval prison now unlocks Estonia’s rich photographic history.

This eatery is emblematic of the connection between Jamaica and Nubia.

This 7th-century monastery was sacked by Saladin.

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

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

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

The largest known Ancient Egyptian obelisk.

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.

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.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

The world's largest concentrated solar power plant.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

God's Saharan sandbox of wrath.

The oldest known university in the world is in Fez, Morocco.