Start your journey by visiting the most significant landmark of Puri, the Shree Jagannath Temple. It is a sacred temple dedicated to Lord Jagannath, his brother Balabhadra, and sister Subhadra. The temple's architecture will amaze you with its intricacy. You will have to follow strict dress codes, and photography is prohibited inside the temple premises.
After having breakfast, head to Gundicha Temple, which is dedicated to Lord Krishna's aunt and uncle, Jagannath's maternal aunt's in-laws. You can explore the temple's architectural beauty and enjoy the serene surroundings. You can then move to the Puri Beach, where you can relax and take in the magnificent coastal view. You can also try some water sports if you like.
Take a day trip to the world's second-largest lagoon, Chilika Lake. The Lake is home to many migratory birds and marine creatures like dolphins. You can hire a boat or a ferry to explore the lake and enjoy nature's beauty.
On your final day, head to the Raghurajpur Artist Village to witness the traditional art of Pattachitra. You can interact with artists and purchase souvenirs to take home. Then, move towards the Konark Sun Temple, a UNESCO World Heritage Site known for its stunning architecture and historical significance.
If you have more time, you can explore other nearby places like the Pipili Applique Village or Lingaraj Temple in Bhubaneshwar. If you have less time, you can skip the day trip to Chilika Lake and spend that time exploring Puri or nearby places. Make sure to carry sufficient cash and wear comfortable clothes and shoes. Avoid visiting during the peak season (June to August), as the place can get crowded.