The Yokohama Sky Building business centre is in a modern and developing area of Yokohama. The 30-storey Sky Building is almost a city within a city, housing a major department store, a spa and restaurants with a fabulous view as well as Yokohama City Air Terminal. It is directly connected to Yokohama station, the largest railway hub of the Kanagawa prefecture, where five train and subway lines connect with links to the Haneda and Narita international airport. Two million passengers pass through here each day. This area is a regional commercial centre and the main business district of modern Yokohama. Major companies in sectors ranging from automotive and IT to foods are headquartered here. Yokohama is the second largest city in Japan by population after Tokyo and lies on Tokyo Bay, south of Tokyo. The city has a strong economic base, especially in the shipping, biotechnology, and semiconductor industries.