World's largest collection of serial killer artwork and other macabre exhibits.

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

Final resting place of the immigrant who brought artificial seltzer water to America.

A winding medieval path was used by mourners to carry their dead to the nearest church.

The dramatic remains of an abandoned farmhouse sit high on the edge of a remote hillside.

A mass grave for victims of one of the city’s worst fires.

This seemingly unremarkable boulder is said to bear the hoofprint of the devil himself.

Records of the dead describe the myriad odd ways people used to die.

A heartbreaking monument showing the last morning in the life of Jane Griffith.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

This innocent-looking townhome is actually a subway exit.

What’s a sure fire way to end up in jail in New York in the 1920s? Peddling bad moonshine.

Final resting place for the Triangle Shirtwaist fire’s unidentified victims.

Final resting place of Typhoid Mary.

The Boston square dedicated to the dark poet who was born nearby.

Monument to a forgotten NYC disaster that claimed the lives of 1,000.

Hiroshima survivor on Riverside Drive.

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

A quiet and contemplative oasis in the middle of New York's bustle and riot.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

Red frames showcase remnants of one of New York's original subway stations.

There are owls with glowing eyes in Herald Square.