The land is home to swimming ponies and a legendary 18th-century treasure.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

This rocky spread has been squeezed up directly from the bowels of the earth.

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

The largest Walmart Supercenter in the United States, referred to affectionately as “Mallmart,” has served the residents of Albany, New York, since 1994.

This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

This relic of 19th-century infrastructure is one of the few remaining coal gas storage tanks in the U.S.

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.

The largest roller-skating rink in the world.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A once grand hotel is being retaken by the wilderness it once capitalized on.

Inside a state forest, the forgotten remains of a Cold War defensive installation.