A notorious punk house turned co-op.

Haven for steampunks.

Join in a Seance at the Swedenborgian Church.

NYC's legendary underground network for bovine transportation.

A whimsical, but often overlooked clock in Park Avenue.

Rummage through this sunken ship, but leave your scuba gear at home.

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

Love, knishes, and best wishes from this legendary Lower East Side bakery.

This collection of grinning ephemera has grown from basement to Brooklyn.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

Relics given to a Manhattan church to avoid seizure by the Italian government.

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

Unique antiquarian shop specializing in globes, maps, and prints.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

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

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

Three-story slide through the New Museum.

A hidden "place of interment for gentlemen."

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

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Wine bottle sculpture with a ship's stateroom inside.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A living archive of urban activism and space reclaimed.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.