The fortress at Montjuïc, the most southerly point from which measurements had been produced when calculating the meridional definition from the metre Inside the 18th century, a fortress was developed at Montjuïc that neglected the harbour. In 1794, this fortress was utilized by the French astronomer Pierre François André Méchain https://troyxqcmx.pages10.com/barcelona-fundamentals-explained-63845808