Freddy Mamani’s buildings in El Alto are frequently introduced through color. The Fondation Cartier’s account does describe bright façades and Aymara-inspired ornament, but it also gives a floor plan: commerce at street level, celebration rooms above and residential space within the same structures. That arrangement is more than a photogenic exterior. It puts buying, gathering and living into a vertical relationship in a city above La Paz where Mamani has worked extensively.

A ballroom is not an afterthought in this architecture. It is one of the spaces for which the building exists, a place where social life can take up room rather than borrow whatever neutral hall is available. In a design discussion that prizes minimalist surfaces, color can be treated as excess and a party room as indulgence. Mamani’s program suggests another account of use. A building can make communal celebration visible in its structure and still contain the daily work and housing that support it.

The Mercosul Biennial identifies Mamani as Aymara, Bolivian, a builder, civil engineer and architect. That combination matters. It resists the simple story of an outsider who arrived to make exotic facades for an anonymous public. His building practice grew within the city whose built environment he is changing. The biennial also describes a mixture of modern Western, Andean, folkloric and other visual references. Cultural specificity here does not mean design frozen in an imagined premodern past; it can include deliberate, contemporary combination.

For a Paris exhibition in 2018–19, the Fondation Cartier invited Mamani to build a ballroom informed by Tiwanaku geometry and Andean festivities. Moving the form from El Alto into a French art foundation altered its function. In Bolivia, a hall participates in local business and social calendars; in Paris, visitors encounter it as an artwork. That difference is worth naming rather than treating an international exhibition as a simple promotion. The museum version can make his visual language visible to new audiences, but it cannot stand in for the everyday life of the buildings where that language was developed.

The Foundation uses the term “cholets” for Mamani’s multifunctional structures, while describing its mixture of “chalet” and “cholo.” Labels can travel with unequal histories, so the useful question is what the buildings do and for whom. Their strongest challenge to an architectural canon may be neither a color nor a nickname. It is the insistence that El Alto’s Aymara residents’ commercial and festive needs can generate a serious architectural language, with the celebration floor given space to count as design.