Siege of Monemvasia
1821 CE.
Shown on the map at 36.690°, 23.055°.
The siege of Monemvasia was a military engagement of the Greek War of Independence, aimed at liberating Monemvasia, shortly before the outbreak of the revolution. It lasted from 15 March to 23 July 1821. According to F. Chrysanthopoulos (Fotakos), the siege began after 25 March.
Text from the Wikipedia article Siege of Monemvasia (1821), licensed CC BY-SA 4.0.