claim: Watertown, Massachusetts is the county seat of Middlesex County.
evidence: Warner Bros. .. Museum , also known as the Warner Bros. .. Studio Tour Archive , is the only studio museum in the movie industry in Burbank , California and is dedicated to Warner Bros. .. Opened in 1996 , the 7,000 sq. foot museum brings together costumes , props , animation cells and letters collected from the history of Warner Bros. film-making and television programs .