Fortezza Pisana di Marciana
The Pisan Fortress at Marciana, built in the twelfth century for defensive purposes, has a square plan and it's characterized by the bastions on all the four sides. Initially it was a warehouse for ammunition and was an important source of water, and it's said that the people used to refuge in it during the attacks of the pirates. Today it's fully restored and hosts summer parties.
Via del Pretorio 68 - Marciana