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

The largest known Ancient Egyptian obelisk.

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

Brightly painted boulders scattered throughout the Sinai Desert.

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

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.

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

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

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

An endless sea of white conical domes.

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 11-foot former president stands on a Kosovo street that also bears his name.

Hundreds of unusual wheel crosses poke above the earth in this small Estonian cemetery.

Historic slum of Tartu.

Hundreds of small crosses have been carved into the bark of the trees outside this small Estonian village.

Legend says lovers who hold hands while venturing along this stone jetty and kiss at the end will remain together forever.

Only a fragment of this 15th-century Dance of Death survives today.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

This peculiar border irregularity is the only way to legally enter Russia without a visa.

Rusted cars, trucks, and buses form a fascinating collection of Soviet-era machinery.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.