- Jolo City is the capital of the province of Sulu in the Philippines. It is located in the southwestern part of Mindanao and is part of the Autonomous Region in Muslim Mindanao (ARMM). Jolo City is known for its rich history and cultural diversity, with a significant Muslim population. It is also home to the famous Jolo Cathedral, which is a significant landmark in the city. However, it is worth noting that Jolo City has been marred by incidents of violence and political conflicts in the past.