Born in Hispania in 76, Publius Aelius Hadrianus (Hadrian) was already a part of the Impirical society. His uncle was the emperor Trajan, and he became Trajan's successor. He was known for exploring the emperor's greatest reaches, and he built what is now called Hadrian's Wall in modern England and Scotland. It is 73 miles long, 5 meters high, and 3 meters wide, and it marked the northern edge of the Roman empire, separating the Celts from the Britons. He reconstructed the Pantheon, too, and he died in the year 138.