If you need to take a rest from the rigors of sightseeing, head for at Sursagar Lake. Bring a picnic or a book ... Whatever helps you unwind!
To explore this body of water, make tracks to Vadodara. There are plenty of other things to see in the area, such as Laxmi Vilas Palace, Baps Swaminarayan Mandir, and Sayaji Baug.