Sure, I'd be happy to help you plan your 3-day itinerary in Ujjain. Here's a suggested itinerary for you:

Day 1:

• Start your day by visiting the Mahakaleshwar Temple, one of the most famous and important temples in Ujjain. It is dedicated to Lord Shiva and is known for its unique architecture and religious significance.
• After that, head to the Kal Bhairav Temple, which is located near the Mahakaleshwar Temple. This temple is dedicated to Lord Bhairav, who is considered to be a fierce form of Lord Shiva.
• Next, visit the Harsiddhi Temple, which is another popular temple in Ujjain. It is dedicated to Goddess Annapurna and is known for its beautiful architecture and intricate carvings.
• In the evening, take a stroll along the banks of the Shipra River and enjoy the beautiful sunset.

Day 2:

• Start your day by visiting the Vedh Shala Observatory, which is an ancient astronomical observatory built by Maharaja Jai Singh II. It is known for its unique architecture and scientific significance.
• After that, head to the Kaliadeh Palace, which is located on the banks of the Shipra River. It is known for its beautiful gardens and scenic views.
• Next, visit the Sandipani Ashram, which is a famous ashram in Ujjain. It is believed to be the place where Lord Krishna and Sudama studied together under Guru Sandipani.
• In the evening, attend the Bhasma Aarti at the Mahakaleshwar Temple. It is a unique ritual where the priests offer ashes to Lord Shiva.

Day 3:

• Start your day by visiting the Chintaman Ganesh Temple, which is dedicated to Lord Ganesha. It is known for its beautiful architecture and religious significance.
• After that, head to the Mangalnath Temple, which is located on a hill and offers panoramic views of Ujjain. It is dedicated to Lord Shiva and is known for its religious significance.
• Next, visit the Bhartrihari Caves, which are located on the banks of the Shipra River. These caves are believed to be the place where the famous poet Bhartrihari meditated.
• In the evening, explore the local markets and try some delicious street food.

I hope this itinerary helps you plan your trip to Ujjain. Have a great time exploring this beautiful city!