Red frames showcase remnants of one of New York's original subway stations.

This innocent-looking townhome is actually a subway exit.

A popular European tradition makes its way to the states on one of America's most famous bridges.

The most confusing clock in New York.

The only subway station in the city that still makes use of gap fillers.

New York City's smallest piece of private property.

The first piece of public art dedicated to LGBT rights.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

The lesser-known Alice sculpture of Central Park dedicated to the “godmother of American children.”

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

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.

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

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

The home of the first American-born saint is one of the only curved buildings in New York.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

An "evil painter" included pointed symbols in this artwork to poke fun at members of the Danish Parliament.

Drink among marionettes at this pub inside a historic puppet theater.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A piece of stonework relief commemorates the site where the Devil's rage, and odd apparel, destroyed a house.