Carmona's signature fortress is a formidable sight. Set atop the Puerta de Sevilla, the imposing main gate of the old town, it had already been standing for five centuries when the Romans reinforced it and built a temple on top. The Muslim Almohads added an aljibe (cistern) to the upper patio, which remains a hawk-like perch from which to admire the typically Andalucian tableau of white cubes and soaring spires.
Buy tickets at the tourist office.