Pichavaram Mangroves are the second-largest mangrove forests that lay just four hours south of Chennai. The 1,100-hectare sanctuary comprises 40 small islands each filled with mangroves. The salt tolerating capability of the mangrove plant makes the entire place lush and green. With it comes to its own rich ecosystem in the form of wildlife. The supporting cast of kites, egrets, stints and other birds are best viewed as you take a boat ride through any one of the 400 water routes available. The rides are cheap, and there’s plenty to see, including a cool watchtower that you can climb up to see the whole sanctuary!