Start your trip by visiting the famous Arapaleeswarar Temple, which is dedicated to Lord Shiva and is surrounded by lush green forests and scenic beauty. The temple is known for its intricate architecture and beautiful carvings. You can also spend some time exploring the nearby Botanical Garden and Semmedu Viewpoint, offering panoramic views of the hills. Make sure to carry enough water and snacks as there are limited shops and restaurants nearby.
Spend your second day exploring the beautiful Agaya Gangai Waterfalls, located amidst the lush green forest of Kollihills. The waterfall is around 300 feet tall and is famous for its crystal clear water. You can take a dip in the waterfall or simply relax, taking in the beauty of nature. You can also visit the nearby Masila Falls and Selur Nadu viewpoint to enjoy the scenic beauty of the hills.
On your last day, explore the mystical Siddhar Caves, which are believed to be the meditation spot for ancient sages. The caves are located at a height of 1000 feet and have a beautiful view of the hills. You can also visit the nearby Boat House and Puliancholai viewpoint to enjoy the scenic beauty of the hills. Don't forget to carry comfortable shoes and clothes as the trek to the caves can be a bit challenging.
Other attractions that you can consider visiting are the Arappaleeswarar Akasa Gangai Falls, the Tampcol Medicinal Farm, and the Botanical Survey of India Garden. To maximize your fun, you can also go trekking, camping, or bird watching in the hills. Make sure to carry enough cash as there are limited ATMs and card facilities in the area.