The University of Tokyo (東京大学, Tōkyō daigaku), abbreviated as Todai (東大, Tōdai), is a major research university located in Tokyo, Japan. The University has 10 faculties with a total of around 30,000 students, 2,100 of whom are foreign. Its five campuses are in Hongō, Komaba, Kashiwa, Shirokane and Nakano. It is considered to be the most prestigious university in Japan. It ranks as the highest in Asia and 20th in the world in 2010 according to Academic Ranking of World Universities. The university was chartered by the Meiji government in 1877 under its current name by amalgamating older government schools for medicine and Western learning. It was renamed "the Imperial University (帝國大學, Teikoku daigaku)" in 1886, and then Tokyo Imperial University (東京帝國大學, Tōkyō teikoku daigaku) in 1897 when the Imperial University system was created. In 1947, after Japan's defeat in World War II, it re-assumed its original name.