Shibuya (渋谷区, Shibuya-ku), literally "Astringent Valley", is a special ward in Tokyo, Japan. A major commercial and business center, it houses the two busiest railway stations in the world, Shinjuku Station (southern half) and Shibuya Station. As of May 1, 2016, it has an estimated population of 221,801 and a population density of 14,679.09 people per km2 (38,018.7/sq mi). The total area is 15.11 km2 (5.83 sq mi). The name "Shibuya" is also used to refer to the shopping district which surrounds Shibuya Station, one of Tokyo's busiest railway stations. This area is known as one of the fashion centers of Japan, particularly for young people, and as a major nightlife area.