Vani Vilas Sagar Dam is the oldest dam that has been constructed in the state of Karnataka. Vani Vilas Sagar is also referred by the name Mari Kanive. The dam is well-known for its marveled engineering and elegant architecture. The dam is surely worth admiring because of its construction is done when the technology was not so advanced. Its water resources provide supplies to many towns and cities especially Hiriyur and Chitradurga. The initiation work is worth adulation by the then Queen and widow of Maharaja Chamaraja Wodeyar. The name of the dam has been given after the alias of the youngest daughter of the Maharaja of Mysore.
The construction of the dam was done before the independence years by the Maharaja of Mysore. Its construction was done across the river Vedavathi. A formidable team of skilled workers and engineers led by Sir M Visvesvaraya and Tara Chand Dalal were chosen by the Maharaja of Mysore Sri Krishnaraja Wodeyar IV. The dam is also considered to be the oldest and the biggest in Asia with 162 feet in length and 1300 feet in height. Its engineering has been done in such a way that it also provides two huge pavilions for tourists. These pavilions can be visited for sightseeing or for a picnic.