This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A network of concealed passageways lies within a busy London Underground station.

The remains of Crystal Palace Great Exhibition of 1851.

The final resting place to 300 Victorian-era pets hides inside the city park.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

These century-old townhouses contain some of the first car garages built in the United States.

Dine on old-school red sauce fare at a former mob hang out and film set for The Sopranos.

Two community gardens under the elevated subway lines on a very busy commercial strip in Bushwick.

Spike Lee's provocative film is officially honored right where it was made, the first time a work of art was used as a secondary street name.

A Wisconsin kitsch palace from the 1930s lives its second life in 21st-century Brooklyn.

Feral cats keeping the rodent population at bay all across Greenpoint waterfront.

Abandoned power station once home to a squatter community, now being developed into an arts center.

This miniature village stays behind in the Breuer Building, even as the museums around it come and go.

This 220-year-old house is a reminder of New York City's Dutch past.

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

The artist and New York City icon lived, worked and died in this converted carriage house owned by another iconic artist, Andy Warhol.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

Salute the leader of the proletariat.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

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

Have a steam and some blini at this cafe in a century-old bathhouse.

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