Mausoleum and Holy Seat of Antiochus I of Commagene.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The ruins of an ancient Zoroastrian Tower of Silence believed to be the earliest example of the traditional funerary practice.

Ancient barriers wrap around what was once an important stop along the Silk Road.

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

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

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

A boulder carved into the shape of the cosmonaut's head.

Rusting ships sit in a desert where a sea used to be.

An old airplane engine forms an unusual cairn atop this Moroccan peak.

An eerie former warehouse turned cistern turned movie set.

An abandoned horror film set sits eerily along a highway through Hollywood's "door to the desert."

The largest cactus farm in Africa.

Vast stretch of tide-pools with a unique Moroccan charm.

Traditional 11th-century outdoor tannery.

The true depths of these stunning Moroccan caves are unknown.

One of the most spectacular canyons in the world.

Founded as a refugee camp, now a popular tourist spot.

Morocco's Argania trees are infested with nut-hungry goats.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

Artist Danielle Jacqui decorates nearly every inch of her home inside and out with her work.