Castle of la Palma d'Ebre Monument · la Palma d'Ebre, Ribera d'Ebre, Tarragona A castle of medieval origin in la Palma d'Ebre, in the Ribera d'Ebre, documented from a sale made by James I to Arnau de Bosc; in 1318 it passed to the Hospitaller commandery. In 1450 a prison was built there, now located beneath the present town hall, on Major street, as recorded in the municipal archives of Barcelona. The complex was badly damaged during the Spanish Civil War and the bombing of the Battle of the Ebro, and only fragments survive: stretches of wall incorporated into present-day buildings and a leaning tower converted into a water tank. It has been declared a cultural asset of national interest since 8 November 1988, with identifier IPAC 1318. Photo: Viatgepercatalunya (CC BY-SA 3.0) What to see and do in la Palma d'Ebre