An ancient capital city that dates back 3,000 years old and harbors many surprises.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

An exquisite tunnel of cascading flowers.

On Japan's Tashirojima Island, cats are king.

A huge musical instrument played by the ocean.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

This lava formation earned its whimsical name from the log-like formation of it stones.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Oddly shaped rock formation, misassociated with a nearby utopian community.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

Once a menacing challenge for trailblazers, this trail is now the most scenic drive in Utah.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

These fantastically named natural pools look like something out of a Scottish myth.

A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

This historic tower in the California desert promises visitors a "vortex of good vibes".