Academy City Home of the Future

Academy City (学園都市 Gakuen Toshi?) is a landlocked sovereign city-state whose territory consists of a walled enclave within Western Tokyo. It is the primary setting of the Toaru Majutsu no Index series and its side stories.

As the city's name suggests, it is a city of several schools and institutions of higher learning from kindergarten to university level that learn side-by-side along with the scientists who research on psychic powers and higher technology, the latter being one of the primary reasons for its establishment. It is the most advanced city in the world and its technology is said to be 201 or 302 years ahead of the world. Academy City is composed of 23 districts, called School Districts which are simply numbered from one to twenty-three and each of these districts have a specific purpose.