A circular lake built in 1451 by Sultan Qutub-ud-Din. In the centre of the lake is an island garden with a summer palace known as Nagina Wadi. It has a very beautiful Musical Fountain show (although the music isn’t too good, the lights and fountain are worth a trip). The lake is a popular recreation center surrounded by parks, ‘Bal Vatika’ — an aquarium, a boat club, a natural history museum and a zoo.