Rushing water plunges over a 100-foot drop created by an ancient lava flow at this majestic waterfall.

A large sculptural artwork and garden in Escondido, California.

Want to build a wind turbine? Secede from the nation.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

The world's longest known cave system.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

Like Mardi Gras, only everyone's a pirate.

Florida castle built with aluminum printing plates.

From Japan to Italy, this California park explores the world's cultures through their gardens.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

An eatery for UFO seekers on the Extraterrestrial Highway.

If you want to take a peek at Area 51, this is legally as close as you're going to get.

The self-proclaimed gateway to the Extraterrestrial Highway.

The only thing still moving in this town is the eponymous hot spring.

Equipment used to mine silver and lead has been preserved in this almost-ghost town in northern Nye County.

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

Despite sitting firmly in the global cradle of the Church of Jesus Christ of Latter-day Saints, this Hare Krishna temple is host to one of the largest color festivals outside India.

This underground cave located in the most barren reaches of Idaho is filled with ice year-round.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

The site of an underground detonation of a megaton nuclear bomb in the middle of the Mojave Desert.

This central Nevada cave is the spiritual home of ancient and enigmatic pictographs.

This rest area is also home to a remarkable petroglyph site.