Ban Houayxay (Lao: ຫ້ວຍຊາຍ) (also known as Huay Xai, Houei Sai etc.) is the capital of the Lao province of Bokèo, on the border with Thailand. The town lies on the Mekong river opposite Chiang Khong in Thailand being the northernmost border crossing between the two countries (...) (from Wikipedia)