The Maremma Park extends over a rectangular area of 17,000 hectares, bounded on the north by the Tombolo pine forest and Talamone in the south. Within the park is the mouth of the Ombrone, the pine forest of the Grand-dukes at Marina di Talamone, and the Uccellina mountain range which is 500 m at its highest. You can still see the eight medieval towers built there by Cosimo I de’ Medici, to warn him of danger approaching from the sea. At Poggio Lecci you can see the ruins of the Abbey of San Rabano, built in the eleventh century and dismantled by the Sienese in the fifteenth. Down below there are caves which were inhabited in prehistoric times. There are tours of the park which go in search of rare plants and wildlife (there are 229 protected species of birds) and to enjoy the views over the islands of the archipelago.