The Archaeological Park (Parc Archaeologique des Thermes), behind the Baths of Antoninus Pius, which border the sea. Five-aisled Basilica of Douimès with apse in east and a baptistery in its north-west corner (s. VI). Sunken, circular font with three steps down to bottom. Sitting on the bottom step with my feet on the bottom, I was at eye-level with the ground. About 5-6 feet in diameter at the top, room for only one to put their feet on the bottom. The inner sides were once covered with white marble slabs.