The protected marine area of Baia is the greatest underwater archaeological park of the world .
The ancient city of Baia, and all the line of coast of roman age, is sinked in the sea because of the bradisismo.You can see the rest of the villa of the Pisoni, an ancient noble roman residence , the villa with protiro a particular income with columns; the ninfeo of the emperor Claudius and the Portus Julius. Baia Underwater Archaeological Park is divided into three areas. Zone A reservoir integral , Zone B reservoir general , Zone C reservoir partial. You can visit the underwater park on the boat with transparent glasses, or you can have snorkeling or scuba diving. Before to visit underwater park, you can see the museum of Baia.The museum is in the castle of Baia.