In 2013, the UNESCO-supported Starlight Foundation granted Montsec Observatory, located in the Catalan Province of Lleida, its own Tourism certification, for having "one of the clearest skies in the world". On 14 March, Montsec's Centre for...

UNESCO has declared the Montsec mountain range, located in Western Catalonia, to be one of the world’s six Starlight Tourist Destinations for the excellent qualities of its night sky for astronomic observation. Only six spots in the world hold...