Bisceglie Castle was originally a tower built around 1060-1070 by Normans and enlarged in the 13th century by Swabian counts. The tower was made later higher by the Angevines. Originally the castle was a four-sided building with five towers; today there are three towers left. The North-East tower is adjacent to the 12th century St Giovanni in Castro Church, which was included in the castle as its chapel during the Angevin time. Today the castle hosts an ethnographic museum.
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.