Điện Biên Phủ is a city in the northwestern region of Vietnam. It was the capital of Điện Biên Province before the 2025 Vietnamese administrative reform. The city is best known for the decisive Battle of Điện Biên Phủ, which occurred during the First Indochina War of independence against France. The region is a center of ethnic Tai culture. In prior history, the city was formerly called Muang Thae…