This book is not an historical essay or a cammon guide , but an illustrated work that will allow us to discover a fortress that went from being the centre of power in Galicia during the Middle Ages to complete oblivion , only to be revived again at the end of the 19 century . A narration full of anecdotes and information unknown until this day , that including more than a hundred pictures ( hitorical and current ones ) , illustrations and plans that will immerse the reader in the history of one of the most outstanding monuments on the Rías Baixas .