This park preserves the winter camp site where George Washington stationed his troops during the Revolutionary War in 1779-1780. During these difficult months, the Continental Army became a symbol of patriotism and sacrifice; living in drafty wooden huts, these underfed and undersupplied men survived what was then the coldest winter on record, growing through countless hardships into a disciplined military force. Under Washington’s command, these troops eventually won the country's independence from the British.

This historical park preserves Thomas Edison's home and his last and largest laboratory, which was constructed in 1887. Visitors can walk through Edison's chemistry lab and machine room, see a whole room devoted to various phonographs and sound equipment he and his employees invented, and even see a reproduction of the world's first film studio. The laboratory displays many of Edison's 400,000 existing artifacts and prototypes, providing special insight into his process of invention. Glenmont, the Edison home, contains most of its original furnishings and provides insight into the domestic life and partnership between Thomas and his wife Mina.