Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

A strange house built only at night, with rumored mystic inspiration.

Its buzzing collection honors vibrator history.

Towering basalt columns, a creation of fire and ice.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A winding path built in secret on the edge of the continent.

The rocks in this arid basin leave trails of movement behind them.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

A 140-year-old castle with underground caves hidden in San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

A psychedelic labyrinth on the San Francisco bay.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

A colorful square marks the heart of the city's LGBTQ community.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

A white oak with property rights.

Bad farming practices caused this unnatural natural wonder.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

A Muppet museum in small-town Mississippi honors the roots of Jim Henson's most beloved creation.