It looks like a whale, it's part of Yale, and it's best-known by a nickname you can probably work out for yourself.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

The world's largest public collection of PEZ memorabilia.

Commemorating the spot where the famous scientist fed his pigeons.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

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

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

An unassuming secret door once led to a legendary watering hole.

The "Seinfeld" diner.

One of only two commuter aerial tramways in the United States.

Read a book next to a Midtown waterfall.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

New York City's smallest piece of private property.

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

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."