Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

These oldest of these "embroidered stones" were carved 4,000 years ago in a high mountain valley.

According to myth, there's a bloody explanation for the beautiful bright red color of this rock formation set amidst alpine vegetation.

Dedicated to a Bolshevik revolutionary, this museum is a true time capsule of the Soviet era.

An unusual monument to a gentle giant who became a Kyrgyz hero.

Lonely minaret stump of a destroyed city.

Built entirely of interlocking pieces, construction of this Chinese Muslim house of worship required zero nails.

The large collection of pre-Columbian pottery might make you blush.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The television series' iconic giant foot was borrowed from this classical painting.

A battle between nature and architecture in the Cambodian jungle.

Extremely isolated Silk Road caravanserai in the middle of nowhere.

Resonant stone, that has been played since prehistoric times.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

A tree seems to grow from the ocean floor on this strange strip of sand slowly being overtaken by the sea.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

A monument to the more than one million enslaved Africans deported from the port of Ouidah.

Africa's Venice on stilts.

The world's largest church atop a political fault line.

Where thousands of slaves passed through the "Door of No Return."

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

These picturesque structures speckle the hill above the monastery.