This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

This half-ton piece of the Alps sits at the base of the CN Tower.

One of the largest underground systems runs under Canada's largest urban center.

The site of the deadly Triangle Shirtwaist Factory Fire.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

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

The "Seinfeld" diner.

This small-town pizzeria won the Hollywood lottery.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Ruins of a historic medical facility sits eerily by the water.

A memorial to legendary newsman, publisher, and owner of La Gaceta, the only trilingual newspaper in the U.S.

This museum holds a fully-functional replica of the "Turtle," the first American submarine ever built.

The first commercial nuclear power plant constructed on Long Island.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

Filled with history, this cemetery is maintained each summer by a few hungry goats.

The real-life site of Ichabod Crane's infamous gourd attack.

The first pet cemetery in the United States.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

This giant rock arrived at this quiet park thousands of years ago on the back of a massive glacier.

This historic church with a connection to "Uncle Sam" is now a fraternity house.

The strip club's VIP lounge is actually a rare repurposed Futuro House.

This old estate is a remnant of when the Bronx was a popular summer destination for wealthy New Yorkers.