Lorca es la tercera población en importancia de la región de Murcia, tras Murcia y Cartagena, con unos 60.000 habitantes en su casco urbano y está situada en la parte suroccidental de esta región, en el valle del río Guadalentín. Lorca posee el segundo término municipal más extenso de España, después del de Cáceres.
Lorca was formed alongside the Guadalentín River, which in Arabic means "mud River", in the arid but fertile valley of the same name. The extensive network of irrigation canals that covers the region was introduced by the Arabs during the middle ages.
In 1224, King of Castile and León Fernando III, his son and heir, Prince Alfonso, Alfonso X el Sabio future, will conquer Lorca (the Tower of the tribute of the fortress of Lorca called Torre Alfonsina in honor to the Castilian King), and the city will continue, as in Arab times, her role as head of a rich region agricultural and artisanal activity, but the border will hinder economic development.
Completed the Granada war and the Muslim danger disappeared, the city changes its physiognomy; carried out urban reform and develop trade and exploitation of the field on an ongoing basis. Numerous public works that were attracted to laborers and masons of other places, producing a considerable flow of immigration which increased the population to the 8,000 inhabitants. The new buildings include the Collegiate Church of St Patrick, erected in 1553, which will be the religious centre of the city, but also numerous convents as those of la Merced, Santo Domingo and San Francisco.