Läckö Castle built
1298 CE.
Shown on the map at 58.675°, 13.220°.
Läckö Castle (Swedish: Läckö Slott) is a medieval castle in Sweden, located on Kållandsö island on Lake Vänern, 25 kilometers north of Lidköping in Västergötland, Sweden.
Text from the Wikipedia article Läckö Castle, licensed CC BY-SA 4.0.