Explore the historical Fort Kochi (closed on Mondays), visit the Jewish Synagogue, and see the Chinese fishing nets. Watch a traditional Kathakali dance performance in the evening.
Visit the Rajamalai National Park to see the endangered Nilgiri Tahr and Eravikulam National Park, where you can trek to Anamudi Peak or Kundala Lake.
Take a boat ride in Periyar National Park (closed on Mondays) to spot the wildlife, or try a bamboo rafting experience along the river.
Take a relaxing houseboat ride through the backwaters of Kerala and enjoy the beautiful scenery.
Relax on the beautiful Varkala beach, explore the cliff area, and visit the ancient Janardhana Swamy temple.
Take a leisurely boat ride on the expansive Ashtamudi Lake and explore the serene Thangasseri Lighthouse with beautiful coastal views.
Watch the famous sunrise and sunset at the southernmost tip of India, visit the Vivekananda Rock Memorial and Thiruvalluvar Statue, and explore the Padmanabhapuram Palace.
Visit the Sri Padmanabhaswamy Temple and the Napier Museum for a glimpse of Kerala's rich cultural heritage.
If you have more time, consider adding a visit to the beautiful Athirapally waterfalls near Kochi or a stay at a tea estate in Munnar. If you have less time, skip Kollam and spend an extra day in Varkala or Kochi.