Ouagadougou's communes have invested in huge city-management projects. This is largely because Ouagadougou constitutes a 'cultural centre' by merit of holding the SIAO (International Arts and Crafts fair) and the FESPACO (Panafrican Film and Television Festival of Ouagadougou). Moreover, the villages' growing affluence allows for such investment, and the population's rapid growth necessitates it.