The Great Pyramid of king Khufu on the desert plateau at Giza is the sole surviving link back to the early lists of the Seven Wonders of the ancient world, first composed by such luminaries as the Greek historian Herodotus, the poet Antipater of Sidon and the famous architect Callimachus of Cyrene. Long since lost to humanity, these early sightseeing suggestions had been a fertile source for the first-ever guidebooks written, and used, by Greek travellers in classical antiquity.