Forming a circle, the walls built by the Venetians were fortified by eleven heart - shaped bastions and protected by an 80 metres wide moat. They were built of mud - brick, with the lower part only buttressed by stone. When the Ottomans occupied Lefkosia (Nicosia), they repaired the walls and covered the upper part with stones. The moat around the walls now has many different uses, serving as sports fields, public gardens, an open - air sculpture exhibition, car parks etc.