Justinian was a Roman emperor in the 500s AD. He tried to reconquer the old Roman Empire all around the Mediterranean Sea, but he didn't quite manage it. Justinian's wife was Theodora.
Hagia Sophia, Istanbul (500s AD) Rioters burned the old churches The Roman emperor Constantius II built a big church next to the imperial palace in Constantinople (now Istanbul) in the 300s AD. But people burned it down in riots in 404. Pulcheria soon had the church rebuilt. But rioters burned it down again during the Nika Riots of 532. So [...]
Florence baptistery: the Romanesque baptistery in Florence, Italy Earlier Florence baptistery (700 AD) Probably people had built an earlier, smaller octagonal baptistery here around 700 AD. This is where Catholic priests baptized Christian babies in medieval Florence. What is baptism? Medieval Florence Romanesque architecture All our medieval Europe articles This baptistery is also called San Giovanni, the [...]
Mosque history - Al-Azhar Mosque, Cairo (Egypt, 900s AD) What is a mosque? A mosque (MAH-SK) is a kind of building where people who follow the Islamic faith pray to God. Mosque history People first built mosques in the 600s AD, when the Arabs conquered Jerusalem and other parts of West Asia. The Dome of the Rock in Jerusalem [...]
History of concrete: The fountain in the center of the courtyard is concrete (This is from the Palace of Domitian in Rome) What is concrete? Concrete is a kind of man-made stone. Concrete is cheaper and easier to get than natural stone, and it's easier to shape it. You make it by mixing [...]