Jistrum church was built in the 13th century, the tower is a little older and dates from c. 1230. The church was once a Roman Catholic church dedicated to Saint Peter but was stripped of the Saints statues and painted/decorated walls in one week in 1581 during the Protestant Reformation and became a Protestant church. It is a well preserved and complete 13th century Romanesque church built of red brick.
The church has a gabled roof. On the corners of the nave is a buttress in brickwork, the outer walls are on the upper side decorated with so called keper friezen. The north wall has two Romanesque windows located in the higher zone of the wall, and the lower zone has two closed entrances with brick. The southern wall shows a similar layout but has two large lancet windows build in it, with one small Romanesque window at the tower side. The choir has five regular placed Romanesque windows and the nave is covered with a Romanesque-Gothic domevault. In each bay eight ribs come together in a ring. In the west bay the ribs are squire shaped. During a renovation two hagioscopes were discovered and restored. These windows are also known as leprozenruitjes (windows for people with leprosy).
The wooden pulpit from the third quarter of the 17th century is located against the north wall where the choir and bay meet.
Most of the Frisian churches have a golden rooster as weather vane, but on the 20.5 meters high tower of the church a horse is seen. The golden rooster is a symbol of Jesus Christ who breaks the power of the darkness, forgives sins and calls for a new day. The tower had also a rooster in the past, but it was blown of by the wind and could not be repaired. It was then replaced by a horse because it was cheaper. Apparently the price was more important than the symbolic value.
The original bell in the tower from 1759 was stolen by the Germans during World War II, the current bell dateing from 1949. In 2007, the renovation of the church started and the monumental Pipe organ from the other church in town was installed.References:
From its origin as a small stronghold built by the ancient Illyrian tribe Dalmatae, becoming a royal castle that was the seat of many Croatian kings, to its final development as a large fortress during the Ottoman wars in Europe, Klis Fortress has guarded the frontier, being lost and re-conquered several times. Due to its location on a pass that separates the mountains Mosor and Kozjak, the fortress served as a major source of defense in Dalmatia, especially against the Ottoman advance, and has been a key crossroad between the Mediterranean belt and the Balkan rear.
Since Duke Mislav of the Duchy of Croatia made Klis Fortress the seat of his throne in the middle of the 9th century, the fortress served as the seat of many Croatia"s rulers. The reign of his successor, Duke Trpimir I, the founder of the Croatian royal House of Trpimirović, is significant for spreading Christianity in the Duchy of Croatia. He largely expanded the Klis Fortress, and in Rižinice, in the valley under the fortress, he built a church and the first Benedictine monastery in Croatia. During the reign of the first Croatian king, Tomislav, Klis and Biograd na Moru were his chief residences.
In March 1242 at Klis Fortress, Tatars who were a constituent segment of the Mongol army under the leadership of Kadan suffered a major defeat while in pursuit of the Hungarian army led by King Béla IV. After their defeat by Croatian forces, the Mongols retreated, and Béla IV rewarded many Croatian towns and nobles with 'substantial riches'. During the Late Middle Ages, the fortress was governed by Croatian nobility, amongst whom Paul I Šubić of Bribir was the most significant. During his reign, the House of Šubić controlled most of modern-day Croatia and Bosnia. Excluding the brief possession by the forces of Bosnian King, Tvrtko I, the fortress remained in Hungaro-Croatian hands for the next several hundred years, until the 16th century.
Klis Fortress is probably best known for its defense against the Ottoman invasion of Europe in the early 16th century. Croatian captain Petar Kružić led the defense of the fortress against a Turkish invasion and siege that lasted for more than two and a half decades. During this defense, as Kružić and his soldiers fought without allies against the Turks, the military faction of Uskoks was formed, which later became famous as an elite Croatian militant sect. Ultimately, the defenders were defeated and the fortress was occupied by the Ottomans in 1537. After more than a century under Ottoman rule, in 1669, Klis Fortress was besieged and seized by the Republic of Venice, thus moving the border between Christian and Muslim Europe further east and helping to contribute to the decline of the Ottoman Empire. The Venetians restored and enlarged the fortress, but it was taken by the Austrians after Napoleon extinguished the republic itself in 1797. Today, Klis Fortress contains a museum where visitors to this historic military structure can see an array of arms, armor, and traditional uniforms.