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

New York City's smallest piece of private property.

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

Try not to get slimed in Tribeca.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

Grotto replete with mystical designs laid out in glued shell mosaics.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

Huge winged monument in the United Kingdom.

This gorgeous space is England's largest independent library outside of London.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

Recently restored menagerie of Victorian-era beasts.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

A collection of maritime artifacts from the world's first volunteer life brigade.

A simple Colonial home with a past haunted by death and madness.

To avoid the demolition costs this abandoned drawbridge was simply left in the up position.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

The vaguely man-shaped root that ate the body of the founder of Rhode Island.

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

Rumors of the occult haunt this upscale 1920s hotel.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.