What to see this weekend – from the frustrated sexuality of Jack O’Brien’s sculpture in London to Martha Jungwirth’s energetic abstractions in Paris
At Zollamt MMK, Frankfurt, the artist's barren landscapes reveal the ugly legacy of Apartheid
From Mark Bradford's inauguration of Hauser & Wirth’s Menorca outpost to the first major retrospective dedicated to Pia Arke in Denmark, here are a selection of European shows not to miss this September
