Join in a Seance at the Swedenborgian Church.

Visit the site of a subway powered by nothing more than air--and lots of it.

The site of the deadly Triangle Shirtwaist Factory Fire.

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

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

The former hotel where Tesla invented the radio.

Unrepaired walls from a 1920 anarchist bomb attack.

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

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

New York's oldest and possibly grandest keeper of books.

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

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

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Cryptic messages embedded in the New York City sidewalk.

Built as a gift to the hottest tastemaker of the time, these hidden quarters remain an Art Deco showpiece.

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

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

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

Plot your trip through the city on the sidewalk.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

One of the last Jazz Age "Wonder Theaters" in New York City.

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