24th October is in Spain the day dedicated to libraries. The Spanish Ministry of Culture sponsors this initiative of the the Spanish Association of Friends of Children and Young Adults Books, which started back in 1997.
Each year a diferent Spanish region is selected to hold a celebration event, and an author and an illustrator from that region are selected to make the promotional poster. This year it has been celebrated in collaboration with the Basque Government.
Here you can see some of the posters from other years.