Alcazar de la Puerta de Sevilla. The Seville Gate Citadel. Old town Carmona Seville Andalusia South of Spain. The gate of Seville is an old access to the wall of Carmona, province of Seville, Andalusia, Spain. It is framed in a small fortress (in Arabic al-qasar, fortress). It has also been known as Alcázar de Abajo, because in the highest part of the city is the Alcázar del Rey Don Pedro.