Liinmaa Castle ("Vreghdenborch") was a medieval castle in Eura. In 1367 Albrecht von Mecklenburg, the king of Sweden, ordered to demolish a castle in Kokemäki. It was replaced by two new castles, one in Liinmaa and another in Linnaluoto (Aborch). Liinmaa castle contained two inner ground walls, wooden structures and a moat. The story of Liinmaa castle was very short: it was abandoded in the beginning of the 15th century when administration was moved to Kastelholm and Turku Castles.
By the legend Liinmaa was also a camp of pirates. This may refer to Victual Brothers, a brotherhood hired in 1392 by the Albrecht von Mecklenburg to fight against Denmark.
Nowadays only some earth walls remains the history of Liinmaa castle.
Celje Castle was once the largest fortification on Slovenian territory. The first fortified building on the site (a Romanesque palace) was built in the first half of the 13th century by the Counts of Heunburg from Carinthia on the stony outcrop on the western side of the ridge where the castle stands. It had five sides, or four plus the southern side, which was a natural defence. The first written records of the castle date back to between 1125 and 1137; it was probably built by Count Gunter. In the western section of the castle, there was a building with several floors. Remains of the walls of this palatium have survived. In the eastern section, there was an enclosed courtyard with large water reservoirs. The eastern wall, which protects the castle from its most exposed side, was around three metres thicker than the rest of the curtain wall. The wall was topped with a parapet and protected walkway.