+A **Closed City** is an urban area with restricted access, often due to its strategic importance in [Military](/wiki/military) or sensitive [Research](/wiki/research). These hidden settlements embody a unique blend of isolation and specialized purpose, their gates open only to those with official permission.
+## See also
+- [Restricted Area](/wiki/restricted_area)
+- [Military Base](/wiki/military_base)
+- [Classified Information](/wiki/classified_information)
... 1 more lines