Spiral labyrinth hidden in the hills above Oakland, CA.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

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

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

An abandoned hotel in the highlands of Bali is shrouded in stories of ghosts, curses, and corruption.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

A beloved carnival gets a modern makeover in Los Angeles.

A Mysterious Masonic tomb in San Luis Obispo.

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

Natural rock water slides hidden in the remote forests of northern Idaho.

One of the world's tallest, oldest, and most disgusting chocolate cascades.

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

An old California photo stand has been turned into a shrine to the cozy art of crochet.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

Floating swimming pool within a moored vessel.

Pilgrimage site for star-crossed lovers.

The sole remaining outpost of a once-thriving South Carolina chain still sells “pic-a-nic” baskets.

This iconic science fiction house still looks like something from the future.