Koh Phi Phi Don is the largest island in the Phi Phi archipelago, covering an area of approximately 28 square kilometers, or 17,500 acres. It is 3.5 kilometers wide and 8 kilometers long. The Ton Sai Bay, located in the southern part of the island, is home to a beautiful harbor situated around 2 kilometers from the beach. The main attraction of this area is its stunning sandy beaches and crystal-clear waters, making it a breathtaking spot in the heart of Ton Sai Bay.