 Although San Sebastián benefited greatly from the charts system established in the Southern Basque Country ("foruak", with borders in the Ebro river and no duties for overseas goods), the town was at odds with the more traditional Gipuzkoa, even requesting secession from the province and annexation to Navarre in 1841.In 1863, the defensive walls of the town were demolished (their remains are visible in the underground car park on the Boulevard) and an expansion of the town began in an attempt to move on from its previous military function.Jose Goicoa and Ramon Cortazar were appointed to oversee the work.