A volcanic crater that visitors can look inside.

At this beautifully preserved Pre-Hispanic site, you can see ancient petroglyphs with depictions of llamas and alpacas.

The largest geyser field in the southern hemisphere is a spectacular sight.

One of the largest ancient geoglyphs in the world is a tall desert god used for predicting the weather.

One of Chile's most active volcanoes is riddled with beautiful caves.

What was once a unique system of urban elevators is turning into a mechanical ruin.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

A beautiful deserted greenhouse in the middle of a park.

A sculpture of a giant hand reaches for the stars in the middle of the Atacama desert.

The largest stone moai on Rapa Nui.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

Lebanon's highest point offers expansive views, martian terrains, and eerie ski lifts.

A patchwork of ruins from various civilizations in one of the world's oldest continually inhabited cities.

Mummies preserved naturally for seven centuries.

A monumental underground karstic wonderland is also the water source for over a million citizens of Beirut.

After this one-of-a-kind palace was built the architect's hands are said to have been cut off to keep it that way.

Hidden up a dusty track off the Georgian Military Road is this fascinating waterfall with mountainous views.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

Underground monastery and fortress.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Rock-cut chamber at top of an outcroup, reached by a mountain stairway of forty steps.

Splashes of blue in an otherwise monotonous lunar landscape.