Just a week left at the lovely Dulwich Picture Gallery to take a look at the astounding career of MC Escher. Every poster-owning student knows the Dutchman’s ability to create mind-bending shifts of perspective so that water flows upwards and stairs descend to higher levels. But this exhibition shows he was so much more than a trickster. The first room contains a set of early portraits which demonstrate his brilliant draughtsmanship. The highlight of the middle section is a simply sensational self-portrait in a spherical mirror. And in the final room, providing a more than fitting finale, is his gorgeous take on the effect of ripples on water and another of a reflection in a puddle. The whole reveals him to be not just the greatest graphic artist since Durer but something close to a genius. See it!