Richard Bradley investigates the idea of circular buildings - whether houses or public architecture - which, though unfamiliar in the modern West, were a feature of many parts of prehistoric Europe. Why did so many people build circular monuments? Why did they choose to live in circular houses, when other communities rejected them? Why was it that those who preferred to inhabit a world of rectangular dwellings often buried their dead in round mounds and worshipped their gods in circular temples? Why did people who lived in roundhouses decorate their pottery and metalwork with rectilinear...