Morning: Visit Brihadeeswara Temple built in the 11th century which is also a UNESCO World Heritage Site. It is known for its ancient architecture, vast courtyards, and a 70-tonne monolithic granite slab.
Afternoon: Head to the Thanjavur Royal Palace and Art Gallery that showcases a vast collection of artifacts from the Maratha dynasty.
Evening: Spend some quality time with family at the Sivaganga Park, a popular recreational area in the heart of the city. The park has a small lake, a children's play area, and a jogging track.
Morning: Visit Saraswathi Mahal Library that has a mesmerizing collection of ancient manuscripts and books. Also, the library is home to many rare Tamil works including palm leaf manuscripts.
Afternoon: Drive to the Schwartz Church built by the Danish missionary Rev. Frederick Christian Schwartz in 1779.
Evening: Spend the evening at the Kaveri River Bank in the town of Srirangam that is about 20 minutes (10 km) from Schwartz Church. The Kaveri River Bank is a serene spot that offers a beautiful view of the river and is perfect for evening walks.
Other attractions to consider are the Gangaikonda Cholapuram Temple which is another UNESCO World Heritage Site and the Thiruvaiyaru Temple where the famous Saint Thyagaraja attained Samadhi.
For day trips, you can explore the nearby town of Kumbakonam which is famous for its temples or take a trip to Pudukkottai, a city that is known for its historical landmarks and museums.
Maximize your fun by trying local delicacies such as the Tanjavur famous Dum Briyani, Filter Coffee, and Athirasam.