Oil Tank Culture Park

This guide to Oil Tank Culture Park in Seoul goes back to 1973, when an oil embargo panicked the city into burying five massive fuel tanks under the trees of Maebongsan mountain, a site so secret that neighbors could only guess what was behind its unmarked gate. It follows the tanks through decades of near-invisibility, including a sudden shutdown in 2000 when a new World Cup stadium made them too dangerous to keep nearby. Stand at tank number three, left bare exactly as engineers found it, for the closest thing this city has to a time capsule.