The oldest of the three cities on the Salpi lake. It started out as Casale de Palia, then was called Casale de Fabrica, a group of houses built by shepherds and used as shelters for wintering in. Later, the hamlet became a proper town which took the name Casal Trinità dall'Ecclesia Sanctae Trinitatis, founded by the Benedictine monks of the abby of Trinity of Holy Mount of the Gargano (who received it in 1150 as a gift from Maureliano, Lord of Salpi). The town soon grew, as previously mentioned, because of the considerable emigration of the nearby populations, afflicted by malaria.
This place, ancient and rich in history, is today prevalently an agricultural centre that safeguards the lower part of the Puglian Tableland while showing visitors its sunny face and its expanse of fields. However, it is not possible to forget its archaeological treasures, its strategic position which made it one of the main crossroads in ancient times and its historic role as protector of one of the richest and most mysterious natural areas in Italy. A fascinating place, filled with light and custodian of shadows. Its interweaving of nature and history just might render it the ideal point of departure for understanding this territory.