A way to take your secrets to someone else's grave.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

A winding, cliffside stretch of road overlooking the Delaware River.

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

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

Unrepaired walls from a 1920 anarchist bomb attack.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

The site of a tragic massacre that spawned a multimedia franchise.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Visit the monolithic tomb of America's most famous general.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

This candy-striped tower is the farthest east you can go in the United States.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

The eccentric mansion of one the most popular horror authors of modern times.

A World War II-era submarine is stuck in the mud in New Jersey.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

This evocative New Jersey statue memoralizes the Polish victims of a Soviet massacre.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.