Yokohama is the capital of Kanagawa Prefecture and, with a population of 3.6 million, is Japan's largest city after Tokyo. It is centered on an inlet on the western side of Tokyo Bay, to which it is connected by a half-dozen railway lines as well as expressways and surface streets via Kawasaki. A major industrial zone known as the Keihin Industrial Area stretches along the reclaimed coastline to the north of the central area towards Kawasaki and Tokyo beyond.