Marina Beach: Marina Beach is a natural urban beach along the Bay of Bengal. The beach is stretched out to a distance of 13 kilometers making it the longest natural urban beach in the country, second largest in the world and also the most crowded beach in India. https://en.wikipedia.org/wiki/Marina_Beach
MGR Film City and Knowledge Park: Covering a massive 70 acres at Taramani in Chennai, the MGR Film City is a popular tourist hotspot and the place-to-be for several South Indian films directors
Guindy National Park: Guindy National Park in Chennai is the dominant factor in contributing to the lush green cover of the city. Known to be the 8th smallest national park in the country, the land is blessed with dense forest area, scrublands, lakes, and streams, etc. Guindy National Park is right next to IIT Madras campus.
Auroville a universal township, approximately 20 square kilometers of a barren wasteland, some 10 km north of Pondicherry and 5 km from the coast was chosen for the city https://www.auroville.org/
Pondicherry: Pondicherry is a popular tourist destination in South India. The city has many colonial buildings, churches, temples, and statues which, combined with the systematic town planning and planned French style avenues, still preserves much of the colonial ambiance.https://en.wikipedia.org/wiki/Pondicherry