Kankaria Lake is a man made lake located in the south-east of Ahmedabad city. It was constructed by Sultan Qutub-ud-Din in the year 1451. There's a zoo, natural history museum and children's park by the lake and an island garden called Nagina Wadi which attracts bird life. It is a polygonal lake with 34 sides and internal sluice gates. The lake was in earlier times frequented by the Emperor and his queens, but is now a popular picnic destination with tourists and local people alike. The best time to visit the lake is in the evening.