English: The Old Provincial Jail of Ilocos Sur, located in Vigan City, is a historic site that once served as a detention facility during the Spanish colonial period. Built in the 1800s, it housed prisoners until its closure in the 20th century. Today, the site has been transformed into a museum, preserving its colonial architecture and showcasing exhibits related to the region's history. Notably, it is where former Philippine President Elpidio Quirino, a native of Vigan, was born, adding to its historical significance. The jail stands as a reminder of the province's rich cultural and political past.