This is actually an ex-mausoleum as it has the remains of the 4 founders of Haiti. As a tourist, I paid $5 and also got a free English-speaking guide. There were no other tourists/visitors when I was there (a Tuesday morning). The exhibits depict the history of the country, some real objects, some pictures; I was not allowed to take photos. The description of each exhibit was only in French. There is also an art gallery incorporated in the Mupanah, like a separate corridor, with paintings made by local artists and changed every 3 months - I really liked these paintings, I'm not an expert in art, but I thought they were quite good and pretty.