The pharaons weren´t that clever after all. Excerpt from the long copy: Which metal is rigid as well as supple in the morning, shines in the noonday sun and resists the humidity of the evening? We bet that whit a question like that the sphinx would have enjoyed a much longer career. But it took until the 19th century for architecture to discover its favorite material, aluminium. Claim: Aluminium. The precious metal.