What is Ilocos Sur?
[[Image:PH-ILS Flag.png|thumb|150px|Flag]] [[Image:Ph seal ilocos sur.png|thumb|90px|Seal]] '''Ilocos Sur''', officially the '''Province of Ilocos Sur''', is a [[Provinces of the Philippines|province]] in the [[Philippines]] located in the [[Ilocos Region]] in [[Luzon]]. At the mouth of the [[Mestizo River]] is the capital, [[Vigan]]. Ilocos Sur is next to [[Ilocos Norte]] and [[Abra (province)|Abra]] to the north, [[Mountain Province]] to the east, [[La Union]] and [[Benguet]] to the south and the [[South China Sea]] to the west. Ilocos Sur was founded by the Spanish ''[[conquistador]]'' [[Juan de Salcedo]] in 1572. It was formed when the north (now Ilocos Norte) split from the south (Ilocos Sur). At that time it included parts of Abra and the upper half of present-day La Unión. The current boundary of the province was permanently defined through ''Act 2683'' signed in March 1917. The province is home to two [[UNESCO World Heritage Sites]], the Heritage City of Vigan and the Baroque Church of Santa Maria. [[Category:Ilocos Sur| ]]