Castello di Terra, Medieval castle in Trapani, Italy

Castello di Terra is a former medieval coastal fortress in Trapani's historic centre, on the Lungomare Dante Alighieri. Its quadrilateral plan had semicircular towers along the curtain walls and rectangular towers at the corners. Only the seaward defensive walls, built in local stone facing the harbour, and the entire north-west facade closing the tramontana walls survive; the landward side is now occupied by the Questura.

The fortress was built starting in 1186 as a harbor defense and was reinforced and modified over centuries. Archaeological excavations in 1992 uncovered sections of the original square layout.

The name means "Land Castle", distinguishing it from the Castello a mare guarding the harbour mouth. In 1848 the fortress was stormed by revolutionaries led by Giuseppe Coppola and Enrico Fardella during the Sicilian revolt against the Bourbon monarchy. The piazza by the surviving walls holds the Monument to the Fallen of All Wars, first erected in 1921.

The inland part of the castle site is now occupied by the Questura di Trapani, completed in 1990 to a design by Riccardo Leone, so only the seaward defensive walls survive. These walls face the historic harbour along the Lungomare Dante Alighieri. The Questura stands on a piazza that also contains the Monument to the Fallen of All Wars, first erected in 1921.

The landward part of the castle site is now occupied by the Questura di Trapani, completed in 1990 to a design by the Roman architect Riccardo Leone. The same piazza holds the Monument to the Fallen of All Wars, first erected in 1921, beside the surviving seaward walls.