One of the most striking discoveries of recent times is that of gravitational waves. The existence of these elusive ripples in the spacetime was predicted by Albert Einstein a hundred years ago. At times, even Einstein doubted the existence of gravitational waves in nature and never imagined that they would ever be detected. The recent discovery opens up a new branch of observational astronomy that is unique in several senses. This lecture will tell the exciting story of this discovery, what went behind, and what lies ahead.