Interesting little nugget, if that particular epic fight ever caught your eye. Historic Vietnam site in new battle: tourism; Country faces many challenges in tourism market - New York Daily News
A reminder via twitter from Professor Tony Pollard that next year is the 70th anniversary of the battel. Plus he recommended a film I'd not heard of directed by Pierre Schoendoerffer on the battle made in 1992 with active assistance from the French and Vietnamese military. See: Dien Bien Phu (film) - Wikipedia and Diên Biên Phú (1992) ⭐ 6.2 | Drama, War Pierre earlier in had made a stunning film for a platoon led by a French officer and NCO, available on DVD only in French, La 317 Eme Section (The 317th Platoon), set in 1954, in the jungles. See: The 317th Platoon - Wikipedia and The 317th Platoon (1965) ⭐ 7.3 | War
Some French visit the site of the battle of Caobang-Dongkhe, which was arguably even more important than Dienbienphu for the final outcome of the war . The road (the old RC 4) is still in use but the country is still heavily overgrown. I have not heard of organized tour groups though. The whole area is on the Chinese border so the Vietnamese may be sensitive about that.