A short piece on Mike Nelson after seeing his super intelligent Hayward retrospective "Extinction Beckons" back in April. I first met Mike in London in 2001, after seeing his incredible installation The Coral Reef, and have followed his work ever since, our paths intersecting every few years or so. This essay charts twenty years of my intense responses to one of his works in particular, MAGAZIN: Büyük Valide Han, which I first saw in Istanbul in 2003.