Vihar Lake brags of being the largest of all the three lakes of Mumbai. Similar to Tulsi Lake, this lake too shares the site of Sanjay Gandhi National Park. It is a quiet stretch of water, about 27 miles from the center of Bombay. The lake is a major source of potable water to the City of Dreams. Both Tulsi and Powai Lake are located in the close vicinity of Vihar Lake. The lake gets the rain water seized by the catchment area of Powai-Kanheri Hill Ranges. One of Mumbai's prime water sources, Vihar Lake generates drinking water that meets a fraction of city's water requirement. Its locales, dotted with hills and rich vegetation, are just beautiful. Infact, you can watch migratory as well as native birds here. This unruffled place also has a sunset point, which offers a spectacular view of the sun at dusk. Mountains on one side and national park on the other make this lake a sought-after destination. On its northern banks, there is a water treatment plant that has water pipelines running along the eastern fringe of the lake. IIT Bombay is positioned on the southern part of the lake. Vihar Lake is not open to be visited by the public, yet interested visitors could seek the permission of park's authorities.