Overview of Luang Prabang from Phu Si hill with the Mekong River in the background, northern Laos

luang prabang mekong river northern laos southeast asia landscape view hills architecture nature city travel panorama greenery cultural heritage tourism tranquility historical site vastness exploration outdoor scenic hiking relaxation serenity village mountains art traditions biodiversity cloud fog rural picturesque distant riverside adventurous lush buildings serene riverscape lover beauty mountain natural