Cryptic messages embedded in the New York City sidewalk.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

World's first "penitentiary," meant to be humane, drove men insane.

Yo, Adrian!

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

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

A one-of-a-kind collection of a unique medium.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A psychedelic labyrinth on the San Francisco bay.

San Francisco's newly reopened hands-on science museum.

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

These eerie outliers of the lightning bug family glow a mysterious blue color.

1920's mining camp and environmental education center is serving to protect the surrounding forest, one of the last of its kind in the Pacific Northwest.

A whimsical village of unique treehouses resides in a Washington forest.

Couple's personal collection of pinball machines turned public pinball museum.

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

Seattle's own bad art museum located inside Cafe Racer.