The Kálnoky family was first mentioned in 1588, as proprietor in Micloșoara, where subsequently the center of their estate evolved. According to archaeological excavations the family had a mansion there before the construction of the castle. As the family’s estate in Micloșoara was expanding, it became necessary to build a residential building as well. It is possible that Bálint Kálnoky (who founded the comital branch of the family in the 1500s) built a simple mansion at the end of the 16th century.
The manor house was built at the beginning of the 20th century. The style in which it was constructed corresponds with historicism. The single-floor building with an L-shaped layout has a gable roof, and a jerkinhead roof ending on its short wing. Its main facade is sectioned by wooden pillars that start from the plinth, and rise tall above the walls like little towers.
The first fortification on the location of today’s building was constructed under the rule of Róbert Károly, when the King moved his seat to Temesvár. In 1856, the castle saw its largest reparation works yet. In that year, the building was radically modified, the northern wing, the northern end of the western wing and the north-eastern corner all gained a historicising aspect.