Believed to have come into existence around 2 million years ago, the Hundred Islands is a spectacle of a total of 143 islands and an additional island during low tide. It is the first national park in the Philippines, as declared by former President Manuel L. Quezon on January 14, 1940.Believed to have come into existence around 2 million years ago, the Hundred Islands is a spectacle of a total of 143 islands and an additional island during low tide. It is the first national park in the Philippines, as declared by former President Manuel L. Quezon on January 14, 1940.

The Hundred Islands National Park is the first Philippine national park and a protected area located in Alaminos, Pangasinan. The islands, totaling 124 at low tide and 123 at high tide, are scattered in Lingayen Gulf covering an area of 16.76 square kilometres (6.47 sq mi). Only four of them had been developed for tourism: Quezon Island (the most developed), Governor Island, Children’s Island, and Pilgrimage Island.