Amon began as a local god of Thebes, governing the air, fertility, and reproduction. His wife was Mut, and his son was Khon. Later, Amon became linked with the sun god Ra, and the two combined as Amon-Ra. In this form, he became worshipped beyond Egypt, and identified with Zeus and Jupiter. His appearance in art was as a man in a loincloth, with a headdress topped by feathers, but other appearances show him with the head of a ram. The temple of Amon-Ra at Karnak was the largest ever built.