The French fire of the castle Historical milestone · Serón de Nágima, Las Vicarías, Soria Image of Serón de Nágima, not of the place itself. In 1810 the Napoleonic troops burned and destroyed the rammed-earth castle of Serón; half a century later, in 1861, the ruin was sold to a private individual for four hundred reales and since then it has not stopped decaying. 1810 y 1861 Photo: LBM1948 (CC BY-SA 4.0) What to see and do in Serón de Nágima