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

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

Temporary Burning Man sculpture made of two 18-wheelers.

An enormous illuminated figure dances on the Las Vegas strip.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

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

On the right bank of the Grand River a plaque remembers an imaginary painter who once awaited his youth.

Outside Grand Valley State University, you'll find a bench upon which many were said to have sat according to the fictional Kcymaerxthaere, waiting for a guide of time.

At HopCat, a marker honors fictional creatures with the ability to travel the missing dimensions of Kcymaerxthaere.

Concrete igloos standing across from what remains of the Michigan Central train depot.

This 1930s log cabin began as a taxidermy museum but is now a popular country music venue.

A Tucson museum and performance space full of found-object movable sculptures.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

An urban laboratory.

This historic national park is covered in the stunning ruins of red rock pueblos.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A self-built castle made by a mysterious man.

Rippling sand dunes frozen in the Arizona rock.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A reproduction of earth's many biomes.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.