Populonia is the only Etruscan city by the sea. Stretching over 80 hectares between the slopes of the promontory of Piombino and the Gulf of Baratti, the Archaeological Park of Baratti and Populonia is a real open-air museum, glittering with ferrous slag that show the impressiveness of the industrial Etruscan village.

The park includes a significant part of the ancient town of Populonia, a unique Etruscan settlement built directly on the sea, with its necropolis, the calcarenite quarries and the industrial working quarters.