The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

These mysterious ruins are hidden amid this sleepy coastal city.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Yo, Adrian!

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Huge masonic hall in Philadelphia with lavishly themed rooms.

This elaborate towering structure was once famed for its revolutionary height.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

These medicine cabinet staples are part of the museum's collection of everyday objects.

A unique sculpture park that specializes in the huge and bizarre.

How this Pine Barrens hill got its name is uncertain, but on a good day the view from the fire tower is crystal clear.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Step inside Lucy, the world's largest "elephant."

World War II bunker still standing on the New Jersey beach.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

An office built to look like a giant basket.

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.