MALBA's founding collection includes 228 works from the Costantini Collection. Among them, paradigmatic pieces by Frida Kahlo, Wilfredo Lam, Roberto Matta, Diego Rivera, Joaquín Torres García, Antonio Berni, Emiliano Di Cavalcanti, Jorge de la Vega, Tarsila do Amaral, Pedro Figari, Lygia Clark, Helio Oiticica, Guillermo Kuitca and José Bedia Valdés, among others. It also holds temporary exhibitions, film series and conferences.