n.
City (pop., 2000: 133,936), southwestern California, U.S., at the base of the San Gabriel Mountains .
Founded in 1874, it was incorporated as a city in 1886. It grew as a winter resort and citrus centre after the construction of the Santa Fe Railway and the freeway system that link it to Los Angeles to the southwest. It is a centre of scientific research, based on the California Institute of Technology and its Jet Propulsion Laboratory. It is the site of the annual college football Rose Bowl and the New Year's Day Tournament of Roses, a flower festival begun in 1890.