The citadel in the centre of Rabat is an awesome place. The highest point of the island it is amazing to imagine the conditions faced by an attcking army, having attached three scaling ladders to each other and discovered they still don't reach. From here you can take in a view of the whole island and all its villages and even see across to Comino and Malta.
The knights of St John in the seventeenth century built most of the citadel. The heat in which they laboured would have been tremendous. The insects bite cruelly and the stones they carried were huge. Respect.