The main tourist destinations in Malwa are places of historical or religious significance. The river Shipra and the city of Ujjain have been regarded as sacred for thousands of years. The Mahakal Temple of Ujjain is one of the 12 "jyotirlingas". Ujjain has over 100 other ancient temples, including "Harsidhhi", "Chintaman Ganesh", "Gadh Kalika", "Kaal Bhairava" and "Mangalnath". The Kalideh Palace, on the outskirts of the city, is a fine example of ancient Indian architecture. The Bhartrihari caves are associated with interesting legends. Since the fourth century BC, Ujjain has enjoyed the reputation of being India's Greenwich,