Siege of Burgos
1475 CE.
Shown on the map at 42.343°, -3.707°.
The siege of Burgos was a siege of the castle of Burgos in the Kingdom of Castile between 1475 and early 1476. It was part of the War of the Castilian Succession. Isabella's supporters and the Aragonese successfully besieged the castle, which was held by Joanna's (Juana) supporters and the Portuguese.
Text from the Wikipedia article Siege of Burgos (1475), licensed CC BY-SA 4.0.