Vyborg Castle built
1293 CE.
Shown on the map at 60.716°, 28.729°.
Vyborg Castle (Russian: Выборгский замок, romanized: Vyborgskiy zamok; Finnish: Viipurin linna; Swedish: Viborgs slott) is a fortress in Vyborg, Russia. It was built by the Swedes during the Middle Ages around which the town of Vyborg evolved. The castle became the stronghold of the Swedish realm in the Karelian region. Throughout the centuries, it was the first defense of the kingdom against the Russians. Its military and strategic status in the late Middle Ages was second only to the fortified capital Stockholm. Currently it serves as the site of Vyborg Regional Museum.
Text from the Wikipedia article Vyborg Castle, licensed CC BY-SA 4.0.