A huge musical instrument played by the ocean.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This lab's maddening silence is good for business but bad for sanity.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

According to one local tradition, the entrance to the Voodoo underworld can be found in New Orleans through seven gates scattered throughout the city's French Quarter.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Private collection of art inspired by cabinets of curiosity.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

This naturally-sourced hot spring is now home to a clothing-optional resort.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

More gold than anywhere else, ever.

A lush green oasis in the middle of Chicago.

Take a drunken tour inside the world's largest known geode.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

A speakeasy takes on Chicago's drinking culture.

New York City's smallest piece of private property.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A library of rare occult books in Los Angeles.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

Read a book next to a Midtown waterfall.