The Espasa Encyclopedia is a comprehensive Spanish-language reference work first published in 1905. It was created by the Espasa Calpe publishing house and has since become one of the most important encyclopedias in the Spanish-speaking world. The encyclopedia covers a wide range of topics, including history, science, literature, and geography, making it a valuable resource for students and researchers. Over the years, the Espasa Encyclopedia has undergone several updates and revisions to include new information and reflect changes in knowledge. It is known for its detailed articles and extensive bibliographies, providing readers with a solid foundation for further exploration of subjects like art, technology, and culture.