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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

The world’s first penitentiary, meant to be humane, drove men insane.

Ride the subways of yesteryear.

The Hudson River School comes alive at this palatial estate.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

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

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

Lie in a hammock where George Washington stood.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

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

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

A monument to the art of slicing people open.

A library and shop devoted to the body, mortality, and bringing to light forgotten or neglected histories

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

One of the oldest Jewish cemeteries in the city, it is now overgrown with an urban forest.

Elevated freight railway turned wildly successful urban park.

New York's unstoppable progress turned this cemetery into the smallest burial ground in the city.