Siege of Tabriz
1501 CE.
Shown on the map at 38.083°, 46.283°.
The siege of Tabriz (Persian: محاصره تبریز) took place in 1501 just after the Safavids had defeated the Aq Qoyunlu in the Battle of Sharur. In the preceding battle the Safavids were able to defeat the Aq Qoyunlus that had an army which was 4 times bigger than the Safavid army. After the siege Ismail I chose Tabriz as his capital and proclaimed himself Shahanshah of Iran.
Text from the Wikipedia article Siege of Tabriz (1501), licensed CC BY-SA 4.0.