Mae Sai district
Mae Sai (Thai: แม่สาย, pronounced [mɛ̂ː sǎːj]; Shan: မႄႈသၢႆ, pronounced [mɛ.sʰǎj]) is the northernmost district (amphoe) of Chiang Rai province in northern Thailand. The town of Mae Sai is a major border crossing between Thailand and Myanmar.