The Ligny tower is set on the westernmost tip of the city on the rocks that form the continuation of the narrow strip of land of the ancient city, between the Tyrrhenian Sea and the Strait of Sicily.
It was designed by Carlos De Grunembergh and built in the period of Spanish domination (1671) at the behest of Prince Claude Lamoral de Ligné, Captain General and Viceroy of the Kingdom of Sicily, to defend the city against North-African corsairs. Equipped with four watchtowers in masonry, with its sturdy, truncated pyramid shape, it is a monument that gives the city of Trapani a unique image.
Today the Ligny tower, completely restored, is home to a small Museum with a collection of archaeological finds from the sea and the Trapani area.
From its terrace you can enjoy an enchanting and spectacular view which stretches from Cape San Vito to Erice and Marsala and an extended view of the city of Trapani, the splendid rocks that divide the Tyrrhenian Sea from the Mediterranean Sea, and to the west the Egadi islands and the islet of Formica.