821–823 siege
Siege
Siege of Constantinople
821–823 siege
- 821 – 823 CE
- Middle East
Meanwhile, elsewhere
- 722 – 1492 CEReconquistaEurope
- 9th century – 10th century CEHungarian conquest of the Carpathian BasinEurope
- 680 – 1355 CEByzantine–Bulgarian WarsEurope
- 8th century – 9th century CECarolingian Renaissance
- 8th century – 12th century CEChristianization of ScandinaviaEurope
- August 843 CETreaty of VerdunEurope
- 813 – 874 CEThe Occultation
- 8th century – 10th century CECarolingian art