📍 Landmark
A Pa Chai (Vietnam's Westernmost Point)
📍 dien bien
A Pa Chai is Vietnam's westernmost point - a remote peak in Điện Biên province where the borders of Vietnam, Laos, and China meet at a tri-border marker, reached via Đồn Biên Phòng 317 in Mường Nhé district's Sín Thầu commune.