The story of Santa Teresa di Gallura has ancient origins.
In Roman times the town was named after "Longosardo" and played an important role in maritime traffic thanks to its port which exported pieces of marble quarried in the nearby mines. The same marble is used for example, according to tradition, for some very important buildings, such as the Duomo and the Baptistery of Pisa and the Pantheon in Rome.
Longosardo or Santa Teresa di Gallura also had visits illustrious as that of St. Francis of Assisi in 1263.
The town was later invaded by robbers Saracens, came under the dominion of the courts of Arborea, a town in the province of Olbia-Tempio, who dealt with to defend the city and fortified with a castle. The castle itself was later destroyed by the Genoese for revenge.
With the destruction of the castle, the fall of the defenses, Longosardo was abandoned and became a refuge for pirates and buccaneers who sailed in those waters.
In 1720 it passed under the dominion of the Savoy, Vittorio Emanuele then in 1808 I started the foundation of the country around an ancient tower. It was he who decide the actual name of the village and draw the topographic map.
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