"Mercedes of Castile; or, Sailing to Cathay" is a novel by the famous American writer James Fenimore Cooper, which transports the reader to the 16th century. The main character, Mercedes de Valverde, a young and brave Spaniard, embarks on a dangerous journey across the Atlantic to new territories beyond the sea. This book is full of adventure, romance and danger that await the heroine on her way to discover new worlds. The author vividly describes Mercedes' journey, telling about encounters with other cultures, the dangers of the sea, and the strong feelings that take hold of the young girl's heart during her journey. This book fascinates with its descriptions and dramatic plot, revealing to the reader a world of unknown territories and incredible adventures.