The unusual burial monument of Arizona's first governor.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

An urban laboratory.

An open-air, roadside eatery celebrating a historic indigenous cuisine of complicated significance.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

These free-roaming horses were once destined to disappear from the land.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

In 1975, a forestry worker in Arizona claimed to have been abducted by a UFO.

A partial tunnel blasted into a steep ridge is all that remains of a failed railway across Arizona.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Feral cats keeping the rodent population at bay all across Greenpoint waterfront.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

An extensive collection of fine art devoted to man's best friend.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A living archive of urban activism and space reclaimed.

Prove you deserve to be fed by Kenny Shopsin.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Spiral-bound community recipes and antiquarian gems mingle at this small East Village shop.