Alba de Tormes is a municipality in the province of Salamanca, western Spain, part of the autonomous community of Castile and León. The town is on the River Tormes upstream from the city of Salamanca. Alba gave its name to one of Spain's most important dukedoms, who had their ancestral seat in the Castillo de los Duques de Alba. St Teresa of Ávila died at a convent she founded in the town and is buried there. From the 12th to the 19th century, the monastery of San Leonardo was located outside the walls of Alba.