Sebesvár (Bologa, Resculum) is in Transylvania, it is in Romania, more precisely in Kolozs County.
After the Mongolian invasion of 1241, it was built to guard the important road between Kolozsvár (Cluj, Klausenburg) and Várad (Oradea). After the rule of the Árpád House ended, the castle fell into the hand of a baron in the 14th century. Then, it was taken over by the man of King Károly Robert in 1319, a nobleman called Elefánti Dezső. In this century the fort was called “Hunyad” which became quite confusing as there is another castle we call “Hunyad” or “Corvin” castle.
Sebesvár castle became part of the hereditary lands of the Transylvanian Voivode in 1362 so it was he who received the income of the neighboring lands. King Zsigmond of Luxembourg gave it to the Voivode of Wallachia, Mircse in 1399 but it was returned to the king in 1408. Sebes Castle was owned by Barons Bánffy István of Losonc and László in 1433 and it has remained the property of the Bánffy family for a long time. (Note, I am using the Eastern name order for Hungarian names where the family names come first.)
Its military importance has gradually been gone. Yet, it became part of the Borderland Castle chain of Transylvania against the Ottoman Empire in the middle of the 16th century. Due to this fact, it has been enlarged but still remained a second-line private castle, maintained by its owner and not by the monarch. The Noble Estates held a Diet among its walls in 1598.
After the defeat of Szászfenes, 1660, the heavily wounded Prince Rákóczi György II was brought here by his guardsmen of Ónod. Read more about Prince Rákóczi’s fights against the Ottomans:
When Várad (Oradea) fell to the Turks, Sebesvár became the only obstacle against the Turk raids towards Kolozsvár (Cluj, Klausenburg). As a result of this, its military role has been increased. This was why the Sultan demanded its destruction which was finally not carried out by Prince Apafi Mihály in 1669; he could bribe the proper Ottoman officers.
There was an inventory made in 1680 which listed everything in the castle which was already in quite ruined condition.
According to a document from 1687, there were only 11 mercenaries and one artilleryman, and the servants of the Bánffy family in the castle.
The castle was not exploded by the Habsburgs in 1701 because of an unknown reason. Moreover, it had some habitable parts in 1715.
The reconstruction plans were made by a young architect, Kós Károly in 1910 but he could manage only the building of the roof of the tower. However, the tower was not there in 2003.
Sebesvár may have looked like this model in the Castle Park of Dinnyés: