In the heart of Victoria lies the Citadella (Citadel), which has been the centre of activity of the island since possibly Neolithic times, but is known to be first fortified during the Bronze Age approximately around 1500 BC. It was later developed by the Phoenicians and continued into becoming a complex Acropolis by Roman times.
The north side of the Citadel dates back to the Aragonese domination period, while the south flank, overlooking Victoria, was re-constructed under the Knights of St. John, namely between 1599 and 1603 The massive defensive stone walls of the fortifications rise above the town and were built by the Knights to protect the village communities from foraging corsairs attempting to take slaves and threatened invasion of Moslem forces fighting Christendom.
Within its walls lies a fine 17th century baroque Cathedral designed by Lorenzo Gafà, the Maltese architect who also built the Cathedral of Mdina. It is said that it lies on the site where a Roman temple dedicated to Juno once stood. It is most famous for the remarkable trompe l’oeil painting on its ceiling, which depicts the interior of a dome that was never built (source).
In photo, a shot of the Cittadella bastions by night.