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 Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.