Gandhi Mandapam

India's first reptile park, founded in 1972 by herpetologist Romulus Whitaker beside Guindy National Park. It houses a large collection of snakes, crocodiles, lizards, turtles and chameleons, including king cobras and pythons. It runs live venom-extraction and awareness demonstrations and pioneered reptile conservation education in India.

One of India's most advanced planetariums, built in 1988 in memory of industrialist B. M. Birla and run by the Tamil Nadu Science and Technology Centre. It sits within the Periyar Science and Technology Centre, whose eight galleries hold over 500 hands-on exhibits.

One of the largest libraries in Asia, opened in 2010 across a nine-storey building with capacity for over a million books, a large children's section and a 1,200-seat auditorium. Built to mark the birth centenary of C. N. Annadurai, it is a modern architectural landmark in Kotturpuram. It draws students and researchers from across the state.

A protected wildlife area within Chennai. National-park access is separate from visits to the neighbouring Children’s Nature Park and Snake Park; contact the Wildlife Division before planning entry to the reserve.

Also known as Adyar Poonga or Adyar Eco Park, this restored 58-acre wetland along the Adyar creek was created to revive the native flora, fauna and tidal ecology of the estuary. Boardwalks wind through mangroves, ponds and grasslands rich in birdlife. It is one of the largest urban ecological restoration projects in India.

A small rocky hillock (Chinnamalai) with a cave where St. Thomas the Apostle is believed to have hidden and prayed before his martyrdom. A Portuguese church built here in 1551 stands beside a large modern circular church added in 1971. Pilgrims visit the cave, a spring said to have sprung at St. Thomas's touch, and a hand-print in the rock.

A large government-run film studio complex established in the 1990s and named after actor-politician M. G. Ramachandran. It houses permanent sets, gardens, waterfalls and shooting floors used by the Tamil film industry, and is open to visitors as a recreation spot. It reflects Chennai's central role in South Indian cinema.

A renowned research library founded by the scholar U. V. Swaminatha Iyer, who rescued and printed classical Tamil Sangam texts from crumbling palm-leaf manuscripts. It preserves one of the most important collections of Tamil manuscripts and rare books, housed within the Kalakshetra campus. It is a pilgrimage point for Tamil literary scholars.

A modern Murugan temple that recreates all six sacred abodes (Arupadai Veedu) of Lord Murugan in a single complex, allowing devotees to worship the six shrines without travelling across Tamil Nadu. Built by the Ganapathy Sachchidananda ashram, its tall gopuram is a Besant Nagar landmark. It is a popular family pilgrimage stop near the beach.

International headquarters of the Theosophical Society, moved here from New York in 1882, set on a roughly 260-acre wooded riverside estate known as Huddleston Gardens. The estate is famous for the Adyar aalamaram, a great banyan tree several centuries old, and the Adyar Library and Research Centre.

An ancient seafront temple to Shiva as Marundeeswarar, the Lord of Medicines, revered as one of the 275 Paadal Petra Sthalams and associated in tradition with sages Agastya and Markandeya.

A large triangular park at the heart of T. Nagar's shopping district, named after the Raja of Panagal, Chief Minister of the Madras Presidency in the 1920s. It provides a rare green breathing space amid the crowded silk-and-jewellery shopping streets. It is a well-known local landmark and meeting point.