In the 18th century, a fortress was built at Montjuïc overlooking the harbour. On 16 March 1794, Though France and Spain had been at war, the French astronomer Pierre François André Méchain was supplied depart to enter the fortress for making observations which were for use to measure the distance https://fcbarcelonamuseum57888.daneblogger.com/32366859/fascination-about-barcelona-history