first half of the 4th c.: Construction of the Milion; it is adorned with sculptures in the round
6th c.: The Milion’s decoration is completed with Justinian’s solar clock and the statues of the imperial family of Justin II.
first half of the 8th c.: Decoration of the monument with mosaic representations of the Ecumenical Councils. Constantine V replaces them with scenes from the Hippodrome
1268-1271: By imperial edict, the Milion under the jurisdiction of Hagia Sophia
after 1453: Probably still standing by the late 15th c., then disappears
second half of the 20th: A few fragments are discovered, althoug they do not permit its reconstruction