The park was made famous by the movie Gorillas in the Mist and you can still see mountain gorillas related to those Dian Fossey studied
There are only two places where you can see the endangered mountain gorilla – the Volcanoes National Park in Rwanda’s Virunga mountains and Uganda’s Bwindi Impenetrable Forest. It’s easier to get to Volcanoes National Park from Kigali than it is to get to Bwindi from Entebbe, so the shortest, easiest way to see the mountain gorilla is on the Rwandan side of the Virungas.
Gorilla permits are more expensive in Rwanda than Uganda, but what you save on the permit in Uganda you’ll have to spend on accommodation because Bwindi requires an overnight stop from Entebbe.