Situated a stone's throw from the market of Matheran, Charlotte Lake is the source of fresh drinking water for the residents of Matheran. While you're here, check out the Pisharnath Mahadev Mandir, a temple dedicated to Lord Shiva. Tourists need to take special care to keep the area clean while they visit. The best time to visit the lake is during the monsoon when the dam from where the lake originates overflows and creates a picturesque waterfall, an absolute treat for the eyes.