Hong Island, part of the protected Than Bok Khorani National Marine Park, is one of Thailand’s most beautiful and instantly recognisable coastal landscapes. Easily accessible from Phuket, Krabi and Khao Lak, the island is renowned for its powder-white sand, crystal-clear water and sheer limestone cliffs rising dramatically from the sea. At its heart lies the breathtaking Hong Lagoon—a hidden, jade-coloured pool enclosed by towering rock walls and reachable by boat at the right tide—considered one of the region’s most memorable natural sights. The main beach offers superb swimming in calm, shallow waters, while a short hike to the hilltop viewpoint rewards visitors with sweeping vistas over the Andaman Sea and surrounding islands. Frequently included in day trips from the region, Hong Island is a must-visit destination, ideal for leisurely picnic, swimming, and taking in some of Thailand’s most iconic coastal scenery.