The Central 46 Compound is a highly restricted area in the Seireitei that serves as the headquarters of the Central 46. It contains an Underground Assembly Hall, the Seijōtōkyorin residential quarters and the Daireishokairō, the repository of all records and knowledge in Soul Society.
Founded by Kisuke Urahara, the SRDI is the principal scientific organization in Soul Society, performing tasks such as developing new technology as well as monitoring communications and activity that may affect the balance of the worlds.
The Central Great Underground Prison is an eight underground prison underneath the First Division's barracks where Shinigami who broke the laws of Soul Society are sentenced to. Its levels include Shugo and Muken.
Located within the Schatten Bereich, Silbern is the headquarters of the Wandenreich. It is part of a large city complex within which the Wandenreich bide their time until they are ready to attack Soul Society.
The Western Branch of Soul Society is accessed via Coin Gate, allowing travel between the United Kingdom capital city of London and Reverse London. It is a home of Dragons which are controlled and protected by the agents of Wing Bind.
Las Noches is the fortress located in Hueco Mundo which served as the base of operations of Sōsuke Aizen after his defection from Soul Society. Prior to this, the much less developed structure belonged to Baraggan Louisenbairn.
The Dangai is the dimension between Soul Society and the Human World that non-Shinigami must pass through when travelling between the two realms. It is separated from space and time, and once served as a penal colony.