While Laos is Southeast Asia's only landlocked country, it is surprisingly home to a whopping 4000 islands. Found in the southern reaches of the nation, Si Phan Don, which is also known as The 4000 Islands is a natural phenomenon like no other. Blessed with white, sandy shores and crystal clear waters, the islands offer beach lovers visiting Laos a chance to spend some time in a tropical beach paradise. Although unlike traditional islands, The 4000 Islands in Laos are surrounded by the water of the Mekong River, instead of the ocean.