Autonomous Region in Muslim Mindanao (ARMM) includes Basilan, Lanao Del Sur, Maguindanao, Sulu, Tawi-Tawi wherein the regional center here is Cotabato City. www.philippinecountry.com present to you the Philippines Autonomous Region in Muslim Mindanao (ARMM) religious and historical sites. Read more about Autonomous Region in Muslim Mindanao (ARMM) Religious and Historical Sites Bookmark to: