The Nowy Sącz Royal Castle is partially restored ruins of the castle. The edifice was built by king Casimir the Great in 1350-1360 on a slope within the fortifications of Nowy Sącz, at the confluence of two rivers Dunajec and Kamienica. Initially the castle had two corner towers, a keep and a residential building. The structure was separated from the city by a moat and a wall.
Among the notable inhabitants were king Louis I of Hungary and Saint Queen Jadwiga of Anjou. A frequent visitor to the castle was Jogaila (king Władysław Jagiełło). In the following centuries the castle hosted fewer Polish monarchs and became the seat of local starosta. Between 1611-1615 the castle was reconstructed in the mannerist style for Sebastian and Stanisław Lubomirski according to design by Maciej Trapola. The castle had already 40 well equipped rooms at that time. During the Deluge in 1655 the castle was almost completely destroyed by Swedish-Brandenburgian troops. Since that time, the uninhabited building began to fall into disrepair.
The structure was destroyed again in 1945, at the end of World War II, when it was used as a German ammunition store and was the site of mass executions. There are also the remains of the city walls nearby.
References: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.