City Walls
The Walls of the Old City were originally built by the Lusignans and later fortified by the by the Venetians by widening and heightening the walls and replacing the square towers with round ones.  Leonardo da Vinci himself was said to have advised on the construction of these walls during his visit to this island in 1481.  Today a fascinating old city lies behind these walls which measure eight metres thick and 15 metres high.