The Floriana bastions overlooking Marsamxett are being restored thanks to a €1.6 million allocation by the Ministry of Justice and Culture.
The fortifications form part of what were known as the Floriana Lines, which were built to protect Valletta.
They were designed by Italian engineer Pietro Paolo Floriani during the Magistracy of Grand Master Antoine de Paule.
They were further improved during the 17th century by Italian military engineer Antonio Maurizio Valperga. Valperga also projected the La Vittoria Bastion to provide some form of enfilading defence.
Over time the bastions have suffered as a result of weathering, vegetation, air pollution and bombing in the second world war.
A section of the bastions was also restored in 2015.