A posh members-only club with a literally dramatic history.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

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

Commemorating the spot where the famous scientist fed his pigeons.

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

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

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

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

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

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

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

Hidden in Central Park's Ramble is a troublesome cave buried just beneath the surface.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.