Visit the Shore Temple, a UNESCO World Heritage Site, and marvel at its ancient stone carvings. Then, explore the Pancha Rathas, a group of five monolithic rock temples. End the day with a romantic sunset at the Mahabalipuram Beach.
Explore the French colonial architecture of the White Town and take a stroll along the Promenade Beach at sunset. Then, visit the spiritual Matrimandir, a golden globe-shaped meditation center. End the day with a delicious dinner at Maison Perumal, a top-rated traditional Tamil cuisine restaurant.
Experience the stunning natural beauty of the Nilgiri Mountains with a ride on the UNESCO-listed Nilgiri Mountain Railway to Ooty. Then, take a leisurely walk in the beautiful Government Botanical Garden and admire the colorful flowers and sculptures. End the trip with a romantic evening at the Ooty Lake.
If you have more time, consider adding a visit to the Brihadeeswara Temple in Thanjavur or taking a wildlife safari in Mudumalai National Park. If you have less time, skip Pondicherry and spend more time in Mahabalipuram or Ooty. Don't forget to check the opening and closing times of the attractions to avoid disappointment.