Complex sentence: The Torre del Oro (English: "Tower of Gold") is a dodecagonal military watchtower in Seville, southern Spain, built by the Almohad Caliphate in order to control access to Seville via the Guadalquivir river.
Split into simpler sentences: The Torre del Oro (English: "Tower of Gold") is a dodecagonal military watchtower in Seville, southern Spain. It was erected by the Almohad Caliphate in order to control access to Seville via the Guadalquivir river.