Source for a sizable portion of Egypt's freshwater supply is more than an optical illusion.

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

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

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

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

Brightly painted boulders scattered throughout the Sinai Desert.

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

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.

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

Even King Tut was intrigued by the glass of the Great Sand Sea.

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

Ozymandias’ time-keeping temple.

An ancient city exhumed from the depths of the ocean.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A sharp sculpture made of thousands of pieces of jagged glass.

Poseidon? No one seems to know.

Monasteries on rock pillars, once accessible only by frayed ropes.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A kaleidoscopic warehouse-maze of handmade neon signs.