A house carved into a rock in the 1940s.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

A striking, menacing sandstone peak towering above a landscape that's equal parts Mordor and the Moon.

Where a guard killed nine German prisoners during one of the worst 20th-century POW camp massacres in U.S. history.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

Brightly painted boulders scattered throughout the Sinai Desert.

An alien landscape of chalk-rock in the Egyptian desert.

A series of five defunct panopticon prisons in Cuba.

A 30-acre garden inspired by the principles of modern physics.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The hottest place on the planet.

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

Europe's largest natural bridge has a 19th century royal chateau built into its side.

The tallest residential building in Africa is an unsettling Brutalist monolith.

An abused and forgotten metropolis, abandoned for centuries.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.

Centuries-old bridges grown from tangled roots.

The atmospheric road was never meant to be so creepy.

Hollowed out cedar log tubs set in an ancient towering forest.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Humboldt's human-powered sculptures race across land and sea for days on end in a wacky quest for dominance.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.