John Martin's newly restored The Destruction of Pompeii and Herculaneum, damaged in the Tate flood of 1928, is on public display for the first time in almost a century in Tate Britain's autumn biggy John Martin: Apocalypse (title link). This is the largest exhibition of his art since 1822. It opened yesterday and runs till 15 January 2012. Entry is overpriced at £14 or £12 for silver surfers. That £500,000 which Arts Council England wasted on Nowhere Island could have been used to bring silver surfers' tickets down to 50% of the adult price.