In the 18th century, a fortress was built at Montjuïc overlooking the harbour. On 16 March 1794, Though France and Spain have been at war, the French astronomer Pierre François André Méchain was provided leave to enter the fortress to make observations which were for use to measure the distance https://flamenco-shows-barcelona63073.jaiblogs.com/60195434/fascination-about-barcelona-history