The oldest certified bowling alley in the United States is in the basement of this century-old bar.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.

This overgrown Illinois water park offers a whole new type of adventure.

Shop of curiosities with a dinosaur museum tucked in its basement.

Former meatpacking facility turned vertical farm and sustainable business complex.

Years of archaeology, just chillin' by the water cooler.

This historic hotel invented the chocolate brownie.

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

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

Venue for strange sideshow displays and musical acts.

Home of an evil witch famous within southern folklore.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

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

A bizarre house filled with an astounding array of collections.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

A bizarre roadside attraction and the first instance of miniature golf in the world.

An abandoned relic of the city's failed experiment with below ground transit.

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

One part antique store, one part curiosities hodge-podge.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The intriguing personal collection of a professional demon-chaser.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Less a museum than a bizarre fantasy world created by artists and engineers.