The fortress was first attested in 1456, but most probably it dates from the 14th century. The history of the building is closely related to the locality of Făgăraş, first mentioned in 1428. The fortress of Făgăraş was one of the largest in the province, and the history of the region was linked to this fortress that dominated the surroundings.
In place of Rhédey Castle once stood an abbey, church and monastery re-enforced with turrets. In 1569, the Kornis family commissioned the construction of a castle on the ruins. The first iteration of Rhédey Castle was built by masters from Târgu Mureș/Marosvásárhely in the second half of the 18th century, using materials from the remains of Kornis Castle.
In 1973, for local purposes, the building was converted into a cultural center, therefore the main rooms were opened together. In addition to the exterior repairments, according to the new function, in order to create a stage and an auditorium, internal changes were made and the building's architectural value has suffered significant damage.