A reproduction of earth's many biomes.

Home of the International Space Hall of Fame.

A unique geological area spiked with wind-carved rocks that resemble teepees.

This is one really big nut.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

Petrified footprints of one of the very first vertebrates to walk on land.

A hugely vast Irish landscape of barren rock that stretches for miles.

This single room has survived the centuries with almost no deterioration.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

The ancient tomb acts as a calendar that keeps perfect time.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A hidden barn-sized rendition of Grant Wood's most famous, and most parodied, painting.