Visit Fort Kochi, a seaside town with a mix of Indian and colonial architecture. See the Chinese fishing nets, St. Francis Church, and the Dutch Palace. Don't forget to try some local street food!
Explore the lush green tea plantations in Munnar. Visit the Tata Tea Museum to learn about the history of tea production in the region. End the day with a sunset view from Top Station.
Take a toy train from Mettupalayam to Ooty and enjoy the scenic views of the Nilgiri Mountains. Visit the Botanical Garden, Doddabetta Peak and Ooty Lake.
Visit the Yercaud Lake and take a boat ride or enjoy a picnic at the Deer Park. Trek to the Killiyur Falls and explore the caves at the Bear's Cave.
End the trip in Coimbatore. Visit the Gass Forest Museum and learn about the flora and fauna of the Western Ghats. Shop for souvenirs at the Brookefields Mall and have a traditional South Indian meal at Annapoorna.
If you have more time, consider visiting the Athirappilly waterfalls in Kerela or the Pykara Falls in Ooty. If you have less time, you can skip Yercaud and spend an extra day exploring Munnar. Make sure to check the opening and closing times of the attractions to avoid disappointment.