Malta was ruled by the Knights Hospitaller, or Order of Saint John, as a vassal state of the Kingdom of Sicily from 1530 to 1798. The islands of Malta and Gozo, as well as the city of Tripoli in modern Libya, were granted to the Order by Spanish Emperor Charles V in 1530, following the loss of Rhodes. The Ottoman Empire managed to capture Tripoli from the Order in 1551, but an attempt to take Malta in 1565 failed.

Following the 1565 siege, the Order decided to settle permanently in Malta and began to construct a new capital city, Valletta. For the next two centuries, Malta went through a Golden Age, characterized by a flourishing of the arts, architecture, and an overall improvement in Maltese society. In the mid-17th century, the Order was the de jure proprietor over some islands in the Caribbean, making it the smallest state to colonize the Americas.The Order began to decline in the 1770s, and was severely weakened by the French Revolution in 1792. In 1798, French forces under Napoleon invaded Malta and expelled the Order, resulting in the French occupation of Malta. The Maltese eventually rebelled against the French, and the islands became a British protectorate in 1800. Malta was to be returned to the Order by the Treaty of Amiens in 1802, but the British remained in control and the islands formally became a British colony by the Treaty of Paris in 1814.



The Wignacourt Aqueduct (Maltese: L-Akwedott ta' Wignacourt) is a 17th-century aqueduct in Malta, which was built by the Order of Saint John to carry water from springs in Dingli and Rabat to the newly built capital city Valletta. The aqueduct was carried through underground pipes and over arched viaducts across depressions in the ground.

The first attempts to build the aqueduct were made by Grand Master Martin Garzez in 1596, but construction was suspended before being continued in 1610. The watercourse was inaugurated five years later on 21 April 1615. Several engineers took part in the project, including Bontadino de Bontadini, Giovanni Attard and Natale Tomasucci. The aqueduct was named after Grand Master Alof de Wignacourt, who partially financed its construction.

The aqueduct remained in use until the 20th century. Most of its arches still survive today, and can still be seen in the localities of Attard, Balzan, Birkirkara, Fleur-de-Lys and Santa Venera. Other remains of the aqueduct include water towers at Santa Venera, Ħamrun and Floriana, and several fountains in Floriana and Valletta.