Why is there a stone relief of Grace Kelly on the wall of Seville Town Hall and how can you track down the railway rom the Ibero-American Expo of 1929? Where might you ind the legacy of Christopher Columbus' son, a medieval ewish cemetery in a car park, the oddest of barbershops, Forgotten souvenirs from the Guadalquivir steamboats, Masonic symbols in a church, the last remaining vestiges of the Andalusian pavilions from the '29 Expo, a little-nown modernist electric power station, an example of he Nazi Enigma machine, a collection of Chinese and apanese art in a Renaissance mansion or the pillars of a medieval synagogue?