Kallanai is an ancient dam in Thanjavur District, Tamil Nadu, India, constructed over the River Kaveri. It is 15 kilometers from Tiruchirappalli and 16 km from NITTrichy. Now,This dam turned out to be a picnic spot and a bird lover's center. The place speaks to the heritage of ancient architecture and culture.You would feel better because of the sight of the dam and the water flow and the scene.Distance from Sangam: 22 km