Ujjain is a city in the Indian state of Madhya Pradesh, India. Ujjain is a very old city, and one of the seven holy cities of the Hindus. It was an important city of Ancient India.it is known for the Mahakaleshwar Temple, a towering structure with a distinctively ornate roof. Nearby, Bade Ganesh Temple houses a colorful statue of Ganesh, the elephant-headed Hindu deity. Harsiddhi Temple features a pair of tall dark pillars studded with lamps.