Rionegro (Spanish pronunciation: [rioˈneɣɾo]) is a city and municipality in Antioquia Department, Colombia, located in the subregion of Eastern Antioquia. The official name of the City is "Ciudad Santiago de Arma de Rionegro" but is named after the Negro River which is the most prominent geographical feature of the municipality. Rionegro is also sometimes called the Cuna de la democracia (Cradle of democracy) as it was one of the most important cities during the era of the Colombia's struggle for independence and the 1863 constitution was written in the city.