Santa María la Blanca, founded in 1203, is one of the oldest synagogues in Spain. The structure has magnificent carvings and horseshoe arches with pinecone capitals. The overall effect is very much that of a mosque rather than a synagogue. But the round windows and relatively plain exterior are in keeping with most European synagogues.The structure was converted into a church during the 15th century. It lies near the ancient Jewish Quarters of Toledo.