An optical illusion found amid a logged redwood forest.

A collection of colorful dinosaurs hidden in an actual rainforest.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

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

A museum dedicated to the alleged Roswell Incident.

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

Home to the deepest rift anywhere on Earth.

Jurassic Park—A Still Life.

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

Odd outsider art installations surround a Gold Rush-era ghost town.

Marta Becket's hand-painted theater in the desert.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

A tree bears footwear on the loneliest road in America.

Small Nevada town embraced its designation as the "Armpit of America" with an Old Spice-sponsored festival.

Singing sand that stands as the final remains of an ancient lake.

Only intact Ichthyosaur skeleton in the United States.

Hundreds of trees made from glass bottles make up this forest on Route 66.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.