Sketch plans of palaces and ziggurats.

Sketch plans showing the relationship of ziggurat and royal palace: (A) at Ur, c. 2000 BC; (B) at Assur, c. 1800 BC; (C) at Assur, c. 1200 BC; and (D) at Khorsabad, c. 700 BC. Lighter hatching indicates palaces; the darker hatching, ziggurats.