Events By place Roman Empire The Pantheon's constructed in (Rome) as it stands today by Hadrian. 125-128 - Dome of the Pantheon's built. Hadrian establishes the Panhellenion. Hadrian distributes imperial lands to small farmers. Hadrian's Villa, Tivoli, Italy,'s started to be built (approximate date). Asia Last (4th) year of the Yanguang era of the Chinese Han Dynasty. Change of emperor of the Chinese Han Dynasty from Han Andi to Marquis of Beixiang, then to Han Shundi. Gautamiputra Sa… (More on 125)