From Assemble’s marbled floor tiles to Peter Zumthor's mixed-media miniatures, Emily King reports from the main exhibition
In further news: Olu Oguibe claims pro-refugee obelisk in Kassel under far-right pressure; all-male BelgianArtPrize shortlist withdraw
In further news: open letter protests all-male shortlist for BelgianArtPrize; Arts Council of Ireland issues impartiality warning ahead of abortion
Rowan Moore looks at the role of gallery spaces in the 21st-century
