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

New York's oldest magic store.

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

A memorial for an outsider theorist who believed that the planet is actually hollow.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

There is beauty and history in the ruins of this former company town.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

What is it about mushrooms that makes people wish they lived inside of them?

This abandoned bridge to nowhere stands secluded in the woods of a Cleveland suburb.

A castle built by an eccentric medieval enthusiast in rural Ohio.

Where beautiful signs live on forever.

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

Rare recess caves fill this unbelievably beautiful Ohio park.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

A real flying saucer, contracted by the U.S. Air Force.

What remains of the summer palace of King Kamehameha III.

A unique set of caves that spits waves back out into the ocean.

Race through the maze, get your name on the sign.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

This former luxury resort in Kaua'i is now an abandoned relic.