The town of Dien Bien Phu itself has a population of around 125,000, although was much smaller at the time of the battle. The majority of the population is not ethnically Vietnamese - rather, Thai ethnic groups form the largest segment. Ethnic Vietnamese make up around a third of the population, with the remainder being Hmong, Si La, or others.
Dien Bien Phu lies in Muong Thanh valley, a 20-km-long and 6-km-wide basin sometimes described as "heart-shaped". It is the capital of Dien Bien province, and has traditionally been considered "remote". It is only around 35 kilometers from the border with Laos.
The main tourist attractions of the town relate to the famous battle - in particular, the war museum and the Viet Minh cemetery are popular.