This entry is just odd and I don't even want to try and understand what exactly wants to be inscribed. There is a "mansion" house (look like from the 60s and hardly special) with a neat broken tomb and somehow there is a museum nearby. Does the tribal houses museum belong to the entry? Also the building at Muramwvya is shut, abandoned and not used in decades. This is the easiest site to visit. For the second one would need some more effort by bus, perhaps private car on the small road if you dare, and the third is off-road so I don't think it's possible to visit at all. Or maybe it just means the fields in that area overall - well guess what they are not special... So not to be rude to Burundi customs, history or the locals, these places are not worth visiting, not universally unique and even if by chance someone with a lot of knowledge about all this would guide me through the locations step by step and tell me all about it, I don't think it would be interesting to me at all, no worth my time, no thank you. I don't think it's significant enough to be a world heritage site.