It seems that this retablo, showing 'el asedio de Mojácar', is in Toledo. The wooden carving was made by Rodrigo Alemán (1470-1542) and the picture is part of a new collection of historical photographs held by the Ministerio de Cultura and the Instituto del Patrimonio Cultural de España. The 'search page' is here.
Mojácar was attacked in 1488 as part of the final surge against the Moor. The fortified town either gave in after an agreement between the alcaide and the Christian leader that they would all get along peacefully (the disneyesque version suggested by a plinth at the fuente) or the more historically accepted version is that the whole town was put to the sword and repopulated by 400 properly Christian Spaniards from Lorca.
retablo, made in 2004, is affixed to the back of the Mojácar church.