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

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

The most confusing clock in New York.

The mummified relics of an American missionary.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A notorious punk house turned co-op.

Haven for steampunks.

The notorious headquarters of a corrupt political machine.

Salute the leader of the proletariat.

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

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

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

The site of the deadly Triangle Shirtwaist Factory Fire.

Manhattan's deadly West Side railroad, which killed hundreds of New Yorkers, is remembered by this simple plaque.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

The home of one of America's most beloved fictional characters has become a real world landmark.

Rummage through this sunken ship, but leave your scuba gear at home.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

The former hotel where Tesla invented the radio.

Unrepaired walls from a 1920 anarchist bomb attack.

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

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.