Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

The "Seinfeld" diner.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

This was one of the first (and last) university-built and operated nuclear reactors.

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

A mysterious air force base built to resemble a Long Island fishing village.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Piano-making empire filled with 200-year-old steam machines still churning out 1,000 instruments a year.

The preserved house of a jazz legend still echoes with his music.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

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

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

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

Little Red Lighthouse under the George Washington Bridge.

One of the last Jazz Age "Wonder Theaters" in New York City.

This enormous Hindu temple in Queens serves incredible dosas in its basement canteen.