Budapest's finest green spot is Margaret Island (Margitsziget) located in the middle of the river Danube between Margaret Bridge and Árpád Bridge. The 100-hectare parkland is kept peaceful and quiet by being sealed off to most vehicular traffic. The park is beautiful and very varied: century-old chestnut avenues, English, Japanese and French gardens alternate with ruins of a nunnery, an old water tower and a wide range of sports facilities.