Hostacov is first mentioned as being a small defensive fortress which was completed by 1297
Hostacov is first mentioned as being a small defensive fortress which was completed by 1297. The site was chosen ostensibly because it is located upon a rocky outcrop on the end of a small spur of land that drops away steeply on three sides, surrounded on two sides by a stream and a river from the other. Along this river at the time it is said a quite important trading and pilgrimage route led from the old stone bridge downstream (which still stands) towards the monastery in Vilemov. The fourth, southern side was made defensible by the digging out of a moat.
This defensive structure was expanded by Heřman Bohdaneč of Hodkov between 1557 and 1583 into a zámek, or chateau in the Rennaisance style. At this time, there were 3 wings, which left the courtyard open to the west. The corridors facing the courtyard were all arcaded and left open on both the bottom and first floors.
Over the years, most probably under the ownership of Marie Magdalena Goltzová around the 1640?s, a fourth wing was built on the western side, enclosing the courtyard. During this stage, the open arches on the upstairs corridor were most probably also walled up, with large double windows installed, leaving the structure as we see it more or less today.
http://chateau-hostacov.cz/