Ujjain was named as Avantika in ancient times. Ujjain is a city located in the state of Madhya Pradesh, India. It holds great historical and cultural significance and has been an important center of trade, education, and religion since ancient times.

- Ujjain as Avantika in ancient times:
Avantika was the ancient name of Ujjain. It finds mention in various ancient texts and scriptures. According to Hindu mythology, Avantika was one of the seven sacred cities where pilgrims could attain Moksha, the ultimate liberation. It was believed to be a city of great importance and was associated with Lord Shiva.

- Historical Significance of Ujjain:
Ujjain has a rich historical background and has been ruled by various dynasties including the Mauryas, Guptas, and Mughals. It was an important political, cultural, and economic center during the reign of the Mauryan and Gupta empires. The city was known for its advanced education system, trade, and administration.

- Kumbh Mela:
Ujjain is also famous for hosting the Kumbh Mela, one of the largest religious gatherings in the world. The Kumbh Mela is held every 12 years and attracts millions of devotees who come to take a holy dip in the Shipra River. It is believed that taking a dip in the river during the Kumbh Mela cleanses one's sins and leads to spiritual enlightenment.

- Mahakaleshwar Temple:
One of the most prominent landmarks in Ujjain is the Mahakaleshwar Temple, dedicated to Lord Shiva. It is one of the twelve Jyotirlingas (divine manifestations) of Lord Shiva and is considered one of the holiest temples in India. The temple is known for its unique architecture and spiritual significance.

- Vikram University:
Ujjain is also home to Vikram University, one of the oldest universities in India. Established in 1957, the university offers a wide range of undergraduate and postgraduate courses in various disciplines. It has played a significant role in the field of education and research in the region.

Overall, Ujjain, known as Avantika in ancient times, holds immense historical, cultural, and religious significance. It continues to attract tourists and pilgrims from all over the world who come to explore its rich heritage and experience its spiritual aura.