Baudolino by Umberto Eco

Set in the 12th century, the novel follows Baudolino, a self-proclaimed liar and adventurer, as he travels from his home in Italy to the mythical kingdom of Prester John. Along the way, he becomes embroiled in a series of political and religious intrigues, meets a variety of fantastical creatures, and tells a series of increasingly elaborate lies. The narrative is framed as a story Baudolino is telling to a Byzantine historian, adding another layer of unreliability to his already questionable narrative. The 5133rd greatest book of all time