A massive collection of petroglyphs dating back some 40,000 years.

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

Mysterious hillside with a continuously burning natural fire.

A shrine of fire worship built on top of a natural flame.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

A public park commemorating the iconic works of a satirist, with medieval ruins on the side.

A gigantic collection of teeny, tiny books.

Take the most scenic fjord landscape in Norway and add dramatic red cliffs, warm clear water, and playful dolphins.

This remote British Imperial telegraph relay outpost drove men insane.

The best-preserved beehive tombs in Oman with spectacular backdrop.

If you dare visit this fort, fire-breathing hyenas might devour your camels.

This beautifully restored fortification kept the city safe for centuries.

This spectacular mosque houses the second-largest chandelier in the world.

This bazaar is one of the oldest in the Arabian world.

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

This giant underground cave chamber can only be accessed through a small opening at the top.

This lonely tomb is all that remains of a once-bustling ancient trade hub visited by Marco Polo.

Where artisans use centuries-old techniques to build traditional Arabian ships.

Massive stele returned to Ethiopia after 70 years in Rome.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

An ancient Ethiopian cave church is endangered by the simple building of a road.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

A powerful tribute to the victims who suffered under Ethiopia's most devastating regime.