The book "Description of the Portuguese Embassy to Abyssinia in 1520-1527" by the author Francisco Alvarez is a unique document that tells about the diplomatic mission of the Portuguese embassy to Ethiopia in the 16th century. The book describes in detail the adventures, meetings with local rulers and traditions of the country, all the obstacles and difficulties that the embassy had to overcome during the trip. The authenticity and objectivity of the painted picture make this book a valuable source for studying the history and culture of Africa and Europe at the time of the Great Geographical Discoveries.