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.

Built just after the American Revolution, the oldest row house in New York City still stands in Chinatown.

A memorial to the first person killed by a motor vehicle in the Western Hemisphere.

Unusual books about food and drink abound in this 19th-century New York townhouse.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

The competition: breathe deeply as long as you can.

A uniquely lettered street sign marks the corner where the iconic word game was invented.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

Recovered suit of a cannibalistic West African gang.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

A town trapped in time - 1958 to be exact.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

A Gothic-style abode built to accommodate the church's three resident peacocks.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

One of only two remaining Victorian-era greenhouses in New York.

A prohibition era watering hole for the police.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

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

The first and only carousel with a lineup entirely of insects.

The oldest living tree in Manhattan comes shrouded in sinister legend.

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