Mind-melting MC Escher, mesmerising Marilyn and the greatness of Glasgow – the week in art

Escher’s eye-popping visions enter the video dimension, Pan-Africanism pulls in the big names and agent provocateur Julio Le Parc hits the UK – all in your weekly dispatch

MC Escher
The great Dutch artist of eye-popping, brain-melting visual paradox gets a rich retrospective of his prints, with video, music and installations adding to the fun.
• Somerset House, London, until 6 September