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.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

The first pet cemetery in the United States.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

Who knew the Devil's domain was a hot spot for tubing?

Lines from a walking song are etched into a rock in Natural Bridge State Park.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.