Ana Sagar Lake is a man-made lake set within the town of Ajmer in Rajasthan state in Republic of India. it had been designed by Arnoraja (alias Ana), the granddaddy of Prithviraj Chauhan, in 1135 -1150 AD and is known as when him. The catchments were designed with the assistance of native public. The lake is touch thirteen Kilometers. The Baradari or pavilions were designed by Shahjahan in 1637 and Daulat Bagh Gardens by Jehangir. there's a Circuit house on a hill close to the lake that accustomed be British Residency.