The complex consists of a country church dedicated to Saint Isidore and a tower, both built in the Spanish period, where perhaps the town of Tegula once stood in Roman times.

The church is very simple: it has a single nave, a very smooth façade with a peculiar bell tower, the only element revealing that the building is a church. An open gallery in front of the church ends right in front of the tower.

The tower was built at the behest of the Cagliari entrepreneur Pietro Porta in the early 1600s to protect a small colony of fishermen working at the tuna fishery in Capo Teulada. The tower boasts three perfectly superimposed floors, with the main entrance facing south. The main façade has two windows on each upper floor, were the ancient arquebuses used to be. Inside, a water tank is located under the staircase leading to the first floor, while the second floor was linked via a manhole and a retractable staircase.

The tower was certainly used in the second half of the 16^th century, as it actively contributed to foil a Barbary pirate raid in 1584. On 14 September 1628, a group of Tunisian pirates attempted to attack Teulada and clashed with a group of militia guards who forced them to flee.