Once a black market electronics marketplace, now an otaku shopper's paradise.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

A bit of retro transportation flair preserved in the world's largest department store.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A pink and gray pair of pachyderms advertise a fireworks shop.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

A touching tribute to the "Queen of Soul."

A priceless collection of the Nation's cryptologic history.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Detroit’s downtown castle is one of the oldest structures in the city.

The grandiose interior of this bar speaks to its past as home to famous jewelers and railway offices.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

This elaborate towering structure was once famed for its revolutionary height.

Try not to get slimed in Tribeca.

Unrepaired walls from a 1920 anarchist bomb attack.

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

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

The "lovely red Vega" of the legendary record-settling pilot.

It was once the base for a series of domestic terror attacks.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.