Kobe is the fifth-largest city in Japan and is the capital city of Hygo Prefecture on the southern side of the main island of Honsh, approximately 30 km (19 mi) west of Osaka. With a population of about 1.5 million, the city is part of the Keihanshin (Keihanshin) metropolitan area along with Osaka and Kyoto. Kobe was one of the cities to open for trade with the West following the end of the policy of seclusion and has since been known as a cosmopolitan port city. While the 1995 Great Hanshin Earthquake diminished much of Kobe's prominence as a port city, it remains Japan's fourth busiest container port. Companies headquartered in Kobe include ASICS, Kawasaki Heavy Industries, and Kobe Steel, as well as over 100 international corporations with Asia or Japan headquarters in the city such as Procter & Gamble, Boehringer-Ingelheim and Nestlé. The city is the point of origin and namesake of Kobe beef as well as the site of one of Japan's most famous hot spring resorts, Arima Onsen.