Start your honeymoon with a visit to the world's second-largest urban beach, Marina Beach, which is famous for its serene sunrise and sunset views. Post that, visit the Government Museum, which houses a plethora of exhibits ranging from ancient coins and sculptures to contemporary art and natural history.
Begin your day with a trip to the beautiful Kapaleeswarar Temple, a Dravidian-style temple dedicated to Lord Shiva. Afterward, explore Fort St. George, a British East India Company trading post with an impressive museum collection detailing the city's history and British colonial presence.
Take a trip to San Thome Church, where St Thomas's remains were allegedly buried, making it an important pilgrimage site for Christians worldwide. Afterwards, explore the quaint Breezy Beach, surrounded by palm trees and a long stretch of clean sand.
Head to the UNESCO World Heritage Site, Mahabalipuram, a popular beach town with ancient structures like the Pancha Rathas and Krishna Mandapa. Afterward, drive to DakshinaChitra, a living museum with traditional architecture, art, and handicrafts of South India's four states.
Your last day is for relaxation. Spend it lounging by the pool or beach at VGP Beach Resort. In the evening, hit the streets of T Nagar for some souvenir shopping and traditional South Indian cuisine.
If you have more time, you can also visit the Arignar Anna Zoological Park or the Kalakshetra Foundation for an evening performance. Those with less time can skip Mahabalipuram & Dakshina Chitra or a day at VGP Beach Resort and spend more time shopping at T Nagar instead.