There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.

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.

"A hideous albatross in the Hudson River Valley."

NYC's legendary underground network for bovine transportation.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

A whimsical, but often overlooked clock in Park Avenue.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

The library of every book lover's dreams.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

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

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

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

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Home on the Hillside, and home of the first breakfast cereal.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A good place to research the Freemasons, esoterica, occultism, and hermeticism.