Ujjain is one of the oldest Indian cities. It was governed by Ashoka and later, during the reign of the Guptas and the legendary Vikramaditya, was a great centre of learning, the poet Kalidasa being one of its illustrious sons. It is one of the venues of the mammoth Kumbh Mela held once in twelve years. Visit the Mahakali Temple, Jantar Mantar and the Gopal Mandir famous for its silver image of Lord Krishna.