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

Fossilized sea bottom and lime quarry.

This elaborate High Victorian Gothic structure is one of the world's few 16-sided buildings.

A CT scan revealed the identity of this 3,000-year-old mummy that everyone erroneously thought was female.

The original Uncle Sam was actually a New York meatpacker who is buried under this historic grave.

A 13,000-year-old mastodon skeleton was found during the construction of a 19th-century New York mill.

In which a local geological marvel becomes a quaint roadside attraction.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

The private island of Yale's elite Skull & Bones society is kind of a dump.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.

A collection of the best toys ever made, The National Toy Hall of Fame is filled with kids, fun, and for some reason, a bird preserve.

This throwback amusement park is home to rides and unique storybook figures from the past.

This tiny little island has, as the name says, just enough room for its single house.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A beautifully designed asylum was resurrected as a hotel and art center with a ghost story or two.

Toxic waste disaster that founded the Superfund program.

Ruins of a once-prized railroad station in New York.

The Hudson River School comes alive at this palatial estate.

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

A castle built for love, and abandoned due to heartbreak.

Why have you never heard of the second most popular tourist site in New York?

Comprehensive gaming collection of over 30,000 electronic games and consoles.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.