The Centennial Light is an incandescent light bulb, recognized as the oldest known continuously operating light bulb. It was first illuminated in 1901, and has only been turned off a few brief times since. It is located at 4550 East Avenue, Livermore, California, and is open to public viewing. Due to its longevity, the bulb has been noted by The Guinness Book of World Records, Ripley's Believe It or Not!, and General Electric. The light has been the subject of many TV shows and news reports along with at least 4 books, and has its own website.
The handmade lightbulb was originally manufactured by the Shelby Electric Company of Shelby, Ohio, towards the end of the 1890s and donated to the Livermore-Pleasanton Fire Department in 1901. It has been relocated several times since and remains in the care of the fire department to this day.
Wikipedia https://en.wikipedia.org/wiki/Centennial_Light
Official Website http://www.centennialbulb.org/
Coordinates 37°40'48.766" N -121°44'21.83" E