Kovalam Beach is the most popular beach among tourists. It is made up of three beaches, namely Lighthouse Beach, Hawa Beach, and Samudra Beach. You can relax on the beach, sunbathe, swim, and enjoy water sports like parasailing and surfing. There are also plenty of restaurants and cafes nearby.
The Halcyon Castle is a colonial-era castle built in the 1930s. It is situated on a hill overlooking the Arabian Sea. The castle was converted into a hotel in the 1950s, but it closed down in 2015. It is now open to the public, and you can explore the castle's architecture, history, and beautiful gardens.
Vellayani Lake is a freshwater lake located on the outskirts of Kovalam. It is the largest lake in Thiruvananthapuram district. You can take a boat ride around the lake, fish, or enjoy a picnic with your family and friends. The lake is surrounded by lush greenery and is a popular spot for birdwatching.
The Neyyar Wildlife Sanctuary is a protected area located in the Western Ghats. It is home to a variety of wildlife, including elephants, tigers, leopards, and deer. You can go on a safari to explore the sanctuary's flora and fauna, go trekking, or visit the crocodile farm and watchtower.
The Shri Padmanabhaswamy Temple is a famous Hindu temple dedicated to Lord Vishnu. It is located in the heart of Thiruvananthapuram city and is one of the 108 Divya Desams (holy abodes of Lord Vishnu). The temple has a rich history and is known for its intricate architecture and beautiful murals.
If you have more time, you can also visit the Karamana River, which is located near Neyyar Wildlife Sanctuary. You can go kayaking, rafting, or just enjoy the beautiful scenery. Another recommendation is to try some local Kerala cuisine, such as appam, puttu, and fish curry. You can find many restaurants serving authentic Kerala food in Kovalam.