Castiglioncello is a frazione of the comune of Rosignano Marittimo, in the province of Livorno, Tuscany, Italy. It stands on a promontory reaching out into the Tyrrhenian Sea, surrounded by pinewoods and hills that fall right down to the sea forming cliffs, little inlets, coves and sandy beaches.
The area was inhabited in Etruscan and Roman times, as attested by the presence of an ancient necropolis. The Medici Grand Dukes of Tuscany had a watch tower built here in the 17th century.
Castiglioncello was a renowned sea resort since the 19th century. People who built their residence here include Luigi Pirandello, Marcello Mastroianni, Luchino Visconti and Vittorio Gassman.
An artistic movement of the 19th century, called Macchiaioli, with painters like Giovanni Fattori, Silvestro Lega, Telemaco Signorini and others, chose this village, because of its beauty, as an inspirational source for their work.