Amid the rubble of Aleppo's Old Quarter, part of a historic market has been restored and re-opened.

One of the oldest and largest castles in the world.

The Syrian headquarters of alleged hashish-smoking assassins.

Ruins of the Crusaders' headquarters.

Mysterious lost empire of the Silk Road.

Iran's "Rose Garden Palace," built during 131 years of rule by Qajar kings, consists of 17 stunning structures.

The abandoned palace stands as a wounded but proud beacon of Afghan hope.

What was once supposed to be the symbol of a shining Afghan future is now a bombed-out ruin.

Bali’s Mother Temple, a breathtaking complex that rises serenely up the side of an active volcano.

Of five volcanoes located in the massive Tengger caldera, this cone is the youngest and most active.

Subterranean place of worship in Indonesia.

This massive complex is made up of hundreds of smaller temples that date back to the ninth century.

Hundreds of Buddhas in a re-discovered Indonesian temple.

The name of this ancient Indonesian temple translates as "Elephant Cave" but it could be more accurately called "The Hellmouth."

Hindu temple of the dead home to hundreds of long-tailed macaques.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

A Christian monastery stands on what was once a holy Incan temple.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

An Inca spa, military outpost or maybe… both?

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

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