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

Beneath its placid surface, one of New York City's primary sources of drinking water hides a haunted past.

The oldest continuously inhabited street in America.

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

At this farm in upstate New York, the former president plotted his reelection campaign.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

A living antique aviation museum in the historic town of Red Hook, New York.

A small Second Empire-style building is one of only seven remaining lighthouses on the Hudson River.

The Hudson River School comes alive at this palatial estate.

A nearly 100-year-old dining car in upstate New York embodies the golden age of roadside dining.

One man's swirling six-acre monument of stone.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

"A hideous albatross in the Hudson River Valley."

Belly up to the bar in Cowtown, don't forget to buy some boots.

A cave's rare beauty held a cavernous secret hidden underground.

This cave column thousands of feet below the earth’s surface is rightly named for one of the most colorful park rangers in history.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The state bird of New Mexico, constructed entirely out of garbage.

This 47-foot chile pepper sculpture welcomes Scoville heat unit obsessed tourists to the Big Chile Inn.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

Ruins of a Carnegie family mansion on Cumberland Island.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.