Have you ever wondered what Freemasonry really is, or how it developed in Spain over the centuries, or what myths and truths lie behind its rites and lodges? These and other intriguing questions find answers in this book, which dives into the history of Freemasonry with a fresh and documented look. From the enlightened values that shape its essence to the debates about its presence at crucial moments in Spanish history, each chapter of this work addresses fundamental aspects of Freemasonry, unraveling myths, dismantling historical misrepresentations, and offering a fresh perspective on its influence on Spanish society. With careful research and a captivating style, Professor Gil invites you to explore the origins, transformations and impact of Freemasonry in Spain throughout the 19th and 20th centuries and up to the present day. From the alleged role of the Count of Aranda in its founding to its presence in the turbulent years of the 20th century, this book sheds light on little-known aspects of this enigmatic institution. But beyond describing historical events, 'Origin of Freemasonry in Spain' seeks to stimulate critical thinking and open new lines of research in the study of Spanish Freemasonry. With an innovative approach and engaging prose, this work challenges pre-established conceptions and invites you to question and reflect from the first to the last page.