This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

The first declared National Monument in the United States.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

This pebble beach is so beautiful that taking its rocks is against the law.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

On East Burnside, a 24-hour vending machine distributes world-class pastries.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

Former hotel turned into haunted playground.

A concrete block embedded with thousands of pulled teeth was created by a local dentist to memorialize his dog.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

The first and only carousel with a lineup entirely of insects.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

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

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Her final resting place was intended to be modest and private, but the power of her popularity continues to draw visitors.

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

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

The private clubhouse for the members of the Academy of Magical Arts.