Sanjay Gandhi National Park
The Sanjay Gandhi National Park area has a long written history dating back to the 4th century BCE. In ancient India, Sopara and Kalyan were two ports in the vicinity that traded with ancient civilisations such as Greece and Mesopotamia. The land route between these two ports was partially through this forest.
Silent Valley National Park
The national park is one of the last undisturbed tracts of South Western Ghats mountain rain forests and tropical moist evergreen forest in India. Contiguous with the proposed Karimpuzha National Park () to the north and Mukurthi National Park (78.46 km) to the north-east, it is the core of the Nilgiri International Biosphere Reserve (1,455.4 km), and is part of the Nilgiri Sub-Cluster (6,000 km), Western Ghats World Heritage Site, recognised by UNESCO in 2007.