Reverend Jen's unique museum/living room showcases her troll collection.

A living archive of urban activism and space reclaimed.

A hidden "place of interment for gentlemen."

New York City's only preserved family home from the 19th century.

New York City's smallest piece of private property.

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

Walk over a 150 year old manhole.

Become a prohibition rebel.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

This innocent-looking townhome is actually a subway exit.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A dilapidated dock tells the story of Titanic's missed arrival.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Avoid gangster interaction while window-shopping.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Try not to get slimed in Tribeca.