A house carved into a rock in the 1940s.

One of the largest trees of its kind in California.

A hidden courtyard houses early 20th-century plaster masterpieces.

North America's largest accredited model railroad museum.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

At this local mall, visitors are ushered through a 1940s jail exhibit.

The Giant Lemon of Lemon Grove.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

Allegedly haunted by Walt Disney himself, this inconspicuous lamp is always kept lit in his honor.

A secret climbing tree hides along the side of a Costa Rican road.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.

Stroll through a wonderland of stupendous moss-covered trees.

This otherworldly church spire reaches up toward the heavens.

Bronze statue marks the spinach capital of the world.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This remote camping site offers incredible stargazing opportunities.

More than a century old, this trading post resides in the Navajo Nation.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

A motel dedicated to Southwestern nostalgia.