The fortress at Montjuïc, the most southerly level from which measurements were being made when calculating the meridional definition of the metre Inside the 18th century, a fortress was built at Montjuïc that overlooked the harbour. In 1794, this fortress was employed by the French astronomer Pierre François André Méchain https://tarotista-gratis41435.techionblog.com/28139784/the-best-side-of-barcelona