In Kuressaare’s Kesk väljak (main square) you’ll find the yellow-painted Town Hall, dating from 1670, its door guarded by stone lions. From the square, Lossi runs south past a monument commemorating the 1918–20 War of Independence to the magnificent Bishops Castle (Piiskopilinnus), set in the middle of an attractive park and surrounded by a deep moat. The formidable structure dates largely from the fourteenth century and is protected by huge seventeenth-century ramparts. The labyrinthine keep houses the Saaremaa Regional Museum, a riveting collection of displays charting the culture, nature and history of the island (including an excellent section on Soviet occupation) You can also climb the watchtowers, one of which houses stunning contemporary art and photography exhibitions.