Far from the medina’s tangle of alleys, in the surreal surrounding of a gated golf resort lined with pomegranate bushes and orange trees, the Museum of African Contemporary Art Al Maaden (MACAAL) appears like a spaceship: The edges of a large brick cylinder meet two rectangular structures that resemble antennae. The exhibition “Material Insanity,” currently on view in the building (designed by architect Didier Lefort), features thirty-four artists, thirty of whom are from Africa. The curators, Meriem Berrada and Janine Gaëlle Dieudji, broadly conceptualized the show around metaphors of materiality.