Alghero is the city of towers par excellence. Built in the Aragonese period at the beginning of the 16th century, they almost all had strategic-military and defensive functions. Starting from the historic centre, there are Torre di Porta Terra, the old city entrance, Torre San Giovanni, Torre Sulis, Torre San Giacomo, Torre della Polveriera and Torre Sant’Elmo. In the Torre di Porta Terra, located in the homonymous square, it is possible to access a multimedia path dedicated to the history and customs of the Sardinian city.