Join 1 科学・技術 upcoming events being held in Province of Ilocos Sur. Province of Ilocos Sur is a historic and culturally-rich province in the Philippines, known for its well-preserved Spanish colonial towns, including Vigan, a UNESCO World Heritage Site, and its stunning natural attractions, such as the Bangui Wind Farm and the Kapurpurawan Rock Formation, offering a unique blend of history, culture, and nature for visitors to explore.