Amenhotep III, king of Egypt (1391-1353 bc), of the 18th Dynasty, builder of extensive architectural works, including portions of the temple of Luxor and the so-called Colossi of Memnon. His reign was one of peace and prosperity, when Egyptian power was at its height. Amenhotep's diplomatic correspondence is preserved in the Amarna Letters, a collection of some 400 clay tablets found in Tall al ‘Amārinah in 1887. Akhenaton, Egypt's great religious reformer, was his son.