A haunting theme park is slowly being swallowed by the jungle.

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

A sculpture for the sun and stars, created by Nancy Holt.

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

Dig for your own trilobites in this goldmine of invertebrates.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Setting this massive marionette aflame rids Santa Fe of doom and gloom for another year.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

A clear blue swimming hole with hidden caves, still unexplored.

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

A university observatory dome painted like the beloved "Star Wars" robot.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

Cold storage for agricultural biodiversity.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Digger attempting to hide itself under 300 tons of rubble.

Four alabaster giants contemplate the tides on the shore of Denmark.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Old Danish castle immortalized in Shakespeare's Hamlet.