"The painted decorations were laid over the latter masonry, and this allows us to date them to the end of the second and the beginning of the first centuries B.C. The building itself must have been constructed earlier." (p.29)
Dedicated in 13 or 11 BC. (p.186); "The structure was 150 metres (490 feet) in diameter, though its seating capacity was probably only 14,000." (p.186)