Posert Castle

Posert Castle (Posrt, Italian: Possert), also known as Šabec (Schabez) and St. Martin, is a ruined fortress near the road between Paz and Šušnjevica, in municipality of Cerovlje, in Istria, Croatia.

Until now the castle was considered as the same fortress with different names, of St. Martin, Posert and Šabec, which in several occasions were separately mentioned and built, but that wasn't confirmed by archaeological research.

The castle was associated with Castrum Sancti Martini from the 11th century, mentioned in the grant by Ulric II to Aquileia patriarchs.

As Šabec was in ruins and abandoned, Juraj decided to build a new castle Belaj south of it.

This indicates that the castle was possibly built by Counts of Gorizia who were the lords of the area until 1374, or by the Habsburg family who inherited their estates.