Thomas Edison National Historical Park contains Thomas Edison‘s laboratory and Glenmont residence (which was closed when we visited). The park is in West Orange, New Jersey. You’ll be amazed by all inventions that originated out of these laboratories (e.g., motion picture camera, improved phonographs, sound recordings, silent and sound movies, and the nickel-iron alkaline electric storage battery.
The laboratory was designated as Edison Laboratory National Monument on July 14, 1956.