Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

Here be dragons.

On this island, you suck away your garbage via an elaborate pneumatic tube system.

A replica of a 7th-century church hides in plain sight in the middle of the concrete jungle.

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

You must take the A train... to the last active cemetery in Manhattan.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

There are owls with glowing eyes in Herald Square.

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

A Gothic-style abode built to accommodate the church's three resident peacocks.

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

The first piece of public art dedicated to LGBT rights.

An extensive collection of fine art devoted to man's best friend.

Harlem park dedicated to compulsive hoarders killed by their own junk.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

The first museum in the United States dedicated entirely to posters.

A sculptural commentary on capitalism pokes up from the East River.

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

Finally, you don't have to be a pious Swedish seaman to relax like one.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

Little Red Lighthouse under the George Washington Bridge.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

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