Explore the vast wilderness of Guindy National Park, the smallest national park in India, which houses over 130 species of birds, 14 species of mammals, and numerous reptiles, and butterflies.
Drive to the picturesque Muttukadu Lake and rent a motorboat, rowboat, or pedal boat and cruise around the scenic lake, amid the lush greenery and mangroves nearby.
Stroll through the well-manicured landscape and botanical garden of Semmozhi Poonga, admiring the diverse range of flora and fauna, themed gardens with beautiful tumbling waterfalls, and a peaceful bird sanctuary.
Drive to Vedanthangal Bird Sanctuary, one of the oldest bird sanctuaries in India, where you can spot migratory birds like the pintail, garganey, grey wagtail, and various other bird species at the largest bird sanctuary.
End your trip with a visit to the breathtaking Mahabalipuram Beach and Shore Temple, a UNESCO World Heritage site, to witness the spectacular sunrise, sunset, and admire the stunning architecture of the 7th-century temple dedicated to Lord Shiva.
If you have an extra day, consider visiting the Pulicat Lake, which has a privately-run bird sanctuary. If you have more time, you can explore Kodaikanal or Ooty, which are popular hill stations near Chennai.
If you have less time, you can consider visiting the Arignar Anna Zoological Park for a quick animal sighting or visit the Broken Bridge, a photogenic landmark on the Adyar River delta which is popular for picnics and fishing activities.