Built on the southern shore at Mahon Harbour in the 1700s is Fort Malborough. The site, which helped give Britain control of the Mediterranean in 1710, took nearly 20 years to complete. Named after Sir John Churchill, Duke of Marlborough, he was one of the most outstanding British generals during that time period. In 1726, when construction was finished, the fort was considered to be a model of modern engineering, thanks to its semi-submerged construction and single entry via tunnel.
Today, people head to the fort to learn more about the history of Menorca. Tours through the fort take about 45 minutes and give insight into what life was like during the 18th century.