Bët-bi is a museum and center for culture and community in the Southwestern part of Senegal. The museum is designed to form part of the landscape, making it a welcoming space for everyone. By sinking the galleries below the ground we are referencing back to the sacrility of the land, honoring what came before while creating a space for art and creative expression. We approached this project by looking at the region's past. We looked at the Saloum Kingdom closely and were fascinated by its origin story as a place founded by the Serer and the Mandinka people jointly, which other ethnic groups later joined. The Mandinka have historically been people of empire and monumental architecture, which provided us naturally with direct references for building. The Serer, on the other hand, held a deeply mystical indigenous religion that had an intimate relationship to the natural elements: the sun, the wind, water, ancestral spirits. The starting point came from looking at this traditional spiritual realm and the series of triangles that define the relationship between the elements, the living and the dead – a self-renewing cycle. It also provided a good way of organising program that is interconnected yet distinct.