Region 1, also known as the Ilocos Region, is located in northern Luzon and consists of 4 provinces - Ilocos Norte, Ilocos Sur, La Union, and Pangasinan. The region has a population of over 4.5 million people and an economy based on agriculture, fishery, manufacturing, and tourism. Major tourist attractions include the Heritage City of Vigan, Hundred Islands National Park, and various beaches, churches, and historical sites. The region was first inhabited by indigenous groups and later settlers from southern China, with Spanish influence beginning in the 16th century.