second among the most visited cities in the region, being only preceded by Florence. In 2019, approximately 1.6 million tourists visited Castiglione reaching an historic record. The town is also one of the most visited in Italy. History While Umbrians and Etruscans were most likely the first inhabitants of its location, Castiglione della Pescaia was first recorded under the name Salebrone in Roman times. The hill close to the coast proved to be an excellent location, as it dominated the sizable inland Prelius Lake, while the lake itself provided food (fish) and trading goods (salt). In the Middle Ages, the city suffered from repeated pirate attacks and almost disappeared. It resurfaced in the 9th century AD under its current name, under joint protection of the Papacy and the Republic of Pisa. The Pisans used Castiglione as a key element in their system of defence along the Tyrrhenian coast. They built first a single tower on top of the hill, later expanded that to three towers joined by a wall that became the nucleus of the citadel. The three towers of Castiglione dominate the city seal to this day. In the 13th century, Castiglione became an independent comune. Meanwhile, the river Ombrone had started silting up Lake Prile, which soon became a lagoon. In this newformed lagoon, malaria mosquitoes took hold, weakening the population of Castiglione. The city requested protection from various powers (Siena, the Medici, Aragon) and finally became part of the Grand Dukedom of Tuscany under the dynasty of Lorraine. The house of Lorraine started a series of projects that greatly enhanced the lives of Castiglionesi. The swamps were drained over decades, increasing the amount of arable land, as well as killing off the malaria-carrying mosquitoes. After Tuscany became part of Italy in 1859, Castiglione became a comune in the province of Grosseto. Government Frazioni The municipality is formed by the municipal seat of Castiglione della Pescaia and the villages (frazioni) and hamlets of Buriano, Pian d'Alma, Pian di Rocca, Punta Ala, Roccamare, Rocchette, Tirli and Vetulonia. List of mayors Main sights One of the most popular tourist destinations in the area is the historical Etruscan centre of Vetulonia, which hosts an Etruscan museum with an adjacent well preserved archaeological site, encompassing ancient remains of the old inhabitants of Maremma. Furthermore, the hamlets of Punta Ala, Riva del Sole, Roccamare and Rocchette are beach resorts catering mostly tourists from