The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

This icon of the Atomic Age now lays dormant.

Hub of Scandinavian culture in a Minneapolis deli.

A hidden world of exotic succulents and cacti.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

Step into a pastel time capsule where candy is truly dandy.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

The world's largest public collection of PEZ memorabilia.

Gorgeous cave resemble a winter wonderland.

Two New York rooftops are home to the largest rooftop soil farms in the world.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

One man's quest to save his town with a trail of record-breaking sculptures.

One of only two remaining Victorian-era greenhouses in New York.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

The island residents are known for taking their quirky sense of humor with them to the grave.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.