A monument stands to the famous suffragist who penned the declaration for women's equal rights, including the right to vote.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Final resting place of Typhoid Mary.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

The "Seinfeld" diner.

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

The loneliest island in New York.

The famous author's cottage hideaway.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

The ballpark in "Pigtown" where the Brooklyn Dodgers made their name was replaced with a huge apartment complex.

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

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.

An abandoned 1920s school with a mysterious history.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

A unusual sanctuary for abused and exotic animals in South Jersey.

The site of one of history's most indelible and horrific tragedies.

A museum of anything and everything Stooge.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

A rare view of a preserved Victorian science museum.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.