Tholkappia Poonga / Adyar Eco Park
A Rate Urban Nature Reserve with minimal and highly controlled human interference

Overview
Opened to the public in 2011, pre-booking is mandatory to visit this Eco Park.
Entry is restricted with only a maximum of 100-250 people allowed inside per day/session.
The ecosystem in the park consists of a tropical dense evergreen forest with thick dark foliage.
There are over 160 species of plants/trees and more than 140 species of fish, amphibians, birds and reptiles.
A number of rare species of birds have been spotted. Some of these are white-bellied sea eagle, pied kingfisher and chestnut-winged Cuckoo.
Chetpet Eco Park
A major Urban Eco Park that is supplied daily with 20K litres of treated water from a sewage plant

Overview
Opened in 2016, the park is built around Chetpet lake, the only natural lake in the center of Chennai.
The park is 16 acres big, with the lake covering 9 acres.
The lake doesn’t have natural freshwater — it’s supplied with 20,000 litres of treated water daily from a tertiary sewage plant.
In addition to a walkway, the park also has a small aquarium, boating options and a small play area for children.