A much more welcome kind of snowbird vacationer, manatees camp out in these springs every winter.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

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

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

The former home of the army detachment that captured Geronimo.

America's only nuclear missile silo open to the public.

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

A controversial memorial at the place where Captain Cook met his violent end.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This legendary urban waterfall creates a dazzling display of rainbows.

Home to a timed geyser created by complete accident.

See massive fossils that are over 200 million years old in northeastern Arizona.

A motel dedicated to Southwestern nostalgia.

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

The ghostly remains of an accidental sea.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

Named after an outlaw who used the basin as a hideout.

This sign designates the road that leads to the infamous Area 51.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

A remote crossroads honoring a fallen talent.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.