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

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

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

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

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

"We Seceded Where Others Failed."

A monument celebrating the idea of reaching inaccessible places.

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

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

There must be a pun in this haystack somewhere...

A bit of retro transportation flair preserved in the world's largest department store.

The most confusing clock in New York.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

An artist's cute bronze subway sculptures belie his violent artistic past.

Visit the monolithic tomb of America's most famous general.

This abandoned subway station can still be seen on regular commuter trips.

Lie in a hammock where George Washington stood.

Plot your trip through the city on the sidewalk.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.