Confident enough that their website is blank apart from an email address, Neuger and Riemschneider are a cornerstone of the Berlin gallery scene: from 1994 onwards, they were instrumental in breaking barely known artists such as Rirkrit Tiravanija, Olafur Eliasson, Tobias Rehberger and Michel Majerus. This year marks 20 years since they moved to their Mitte headquarters, and 25 since they began working with Jorge Pardo, an anniversary celebrated by a recent show. Elsewhere in the programme were thoughtful group shows on negation and the construction of selfhood, a loopily cerebral Mario García Torres exhibition involving an animatronic tortoise and performances by Austrian screen legend Helmut Berger, a stormily politicised James Benning presentation and, demonstrating that Neuger and Riemschneider won’t be pinned down, a display of paintings by Billy Childish.