since 2015, agsa has hosted and supported events connected with tarnanthi (pronounced tar-nan-dee), the festival of contemporary aboriginal and torres strait islander art. the 2015 exhibition was said to be the "most ambitious exhibition of aboriginal and torres strait islander art in its 134-year history". in association with the government of south australia and bhp, an expansive city-wide festival is staged biennially (in odd-numbered years), alternating with a focus exhibition at the gallery in the years in between.