A whimsical monument deep in this park commemorates the groups that helped build it.

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.

Where the embers of the Big Bang were first detected.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

One of the world's largest model railroads is a mind-boggling achievement.

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

The remains of a 19th century spring, and the site of an infamous unsolved murder.