This looks like a waterless fountain, a fountain bursting with flowers.
Brindavan Garden is built at the base of the Krishnarajasagara (KRS) dam. However, it’s so beautiful that one forgets to worry about what would happen if the massive wall holding back a lake from the Kaveri River were to catastrophically fail.
The garden takes advantage of the availability of water both in its fountains and in a gradual cascade that splits the garden down the center.
In the evening, all the tourists in town converge on this site to see the fountains lit up (except on Sundays when everybody is at the Mysore Palace to see it lit up.) About 2 million people a year visit the gardens.