Stier Castle

Stier Castle is an historic Belkan castle positioned on the southern edge of the border between Belka and North Osea (formerly South Belka) in the Waldreich Mountains, northwest of Sudentor. In modern times, Stier Castle witnessed several important events that shaped the outcomes of the Belkan War and Circum-Pacific War.

In When the Cold Breeze Blows Away, it is where the Operation Keynote started once again after Silbervia Conference guests who use fake surrender to Grey Men are planning to make outbreak and stole all of Grey Men's technology in this castle since they, Ponyville Conference guests and Berlin Conference guests, including some USRAC War POWs being imprisoned.