This slender three-story building has also had several famous residents.

The French deconstructionist had a weakness for baked goods.

This simple Manhattan salt house is artfully shaped... well, like a giant granule of salt.

One of the city’s oldest watering holes was originally the home of a famous James Brown (not that one).

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A celebration of capitalism in Midtown.

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

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

Try not to get slimed in Tribeca.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

An intricate network of underground tombs carved into volcanic rock.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The oldest public library in Ireland.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

Through the decades, Black music stars have performed at this historic hub for music and the arts.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

The district's only illusionarium supports free writing programs for local students with every purchase.

A bronze statue of the famed Prussian naturalist commemorates the year he spent in Mexico.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.