Phong Nha Cave is a UNESCO World Heritage Site in Quang Binh Province. It has been voted as one of the most wonderful caves in the world for a number of reasons: for its longest underground river, for its most beautiful underground lake. for its highest and widest entrance, for its most beautiful and widest dry cave, for its most beautiful sandbank and reef, as well as for its most spectacular stalactites, stalagmites and longest water grottos. The magnificent of Phong Nha cave makes tourists feel satisfied like being in the magic world.