St. Paraskevi Church in Radruż dates from the sixteenth-century, which together with different tserkvas is designated as part of the UNESCO Wooden tserkvas of the Carpathian region in Poland and Ukraine.
The tserkva belongs to the oldest and best kept wooden sacramental architecture tserkvas in Poland. Part of the prestigious World Monuments Fund (WMF) list of buildings worthy of preservation and financial sponsorship.
The tserkva is located on an oval hill, by the Radrużka stream, and together with the bell tower is surrounded by a wall (existent from 1825), with a fortification structure. The tserkva's structure is constructed out of a fir and oak framework. The tserkva was most likely funded by poseł to Sejm, and starosta Jan Płaza (died 1599). While being used for sacramental services, the tserkva was also used as a fortress against the invasions by the Tatars.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.