The Knights of St John left Gozo with a collection of historic watch towers, dotted around the outskirts of the island. The towers were built to serve as a communication system for the knights as they provided a 360-degree view of the surrounding waters.
The Gozo watchtowers are the: Mgarr ix-Xini Tower in Xewkija, the Xlendi Tower, the Dwejra Tower and San Blas Tower in Nadur.