Salute the leader of the proletariat.

Where now stands a 42-story condominium tower of marble, glass and steel was once the central market of New York’s slave trade.

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

Nikola Tesla's former home contains an homage hidden from plain sight.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

A very classy 1920s-era bar right in Grand Central Station.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

New York's oldest magic store.

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

Neoclassical bank designed by NY architects Helmle & Huberty.

Historic Greenpoint theater, turned roller disco, now housing a chain pharmacy store.

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

A one-ton statue of Steve Rogers beautifies the entry to a Brooklyn Bed, Bath & Beyond.

I fought the law and the precinct caved in.

This neighborhood grocery houses a treasure trove of Eastern European delights.

This interactive gallery makes you feel like you've stepped into a fantasy world filled with whimsical monsters.

“Invented in Key West, Perfected in Brooklyn."

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

Once America's longest-manned military fort, now an abandoned hulk.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.

These subterranean storage areas hold emergency water reserves.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

Russian history in San Francisco.