The Colesseum (The Flavian Ampitheatre), Rome, by the Flavic Dynasty Emperors Vespacian, Titus, and Domician
Greek-derived decorative weight non-bearing columns (so slimmer + taller) as well as structural arches (21 St. 29 Min, 1 Jan 70 Jahr – 1 St. 22 Min, 1 Jan 100 Jahr)