Siege of Negroponte
1470 CE.
Shown on the map at 38.467°, 23.267°.
The siege of Negroponte was fought between the forces of the Ottoman Empire, led by Sultan Mehmed II in person, and the garrison of the Venetian colony of Negroponte (Chalcis), the capital of the Venetian possession of Euboea in Central Greece. The Ottoman sultan Mehmed II laid siege to the fortress at Negroponte. The siege lasted for almost a month, and, despite great Ottoman casualties, ended in the capture of the city and the island of Euboea by the Ottomans.
Text from the Wikipedia article Siege of Negroponte (1470), licensed CC BY-SA 4.0.