The oldest parts of the Medelplana church date from the 1100s, with the tower added in the 1300s and the choir and armory coming later. At one time the church may have been dedicated to St. Helena (Elin) of Skövde and Götene. What is believed to be St. Helena's altar is currently the baptismal altar. In the village as it was in the middle ages, there was also a St. Helena's spring, which was later excavated and restored. It is situated by the road just north of the church.
Inside the south door stand two well-preserved lily stones from the 1100s. A gap where stairs used to be is on the church's north side, and an old box for contributions to the poor also is found there.
In 1611 the Danes were devastating the area, and among other deeds they burned the town of Skara. In Medelplana there was a pastor by the name of Jonas Andersson Grodt, and when he heard stories about how the Danes were causing havoc, he collected his own silver items and presumably the church's silver collection. According to a registry drawn up prior to the disappearance, the collection consisted of two silver goblets and a box made of silver for consecration wafers. He went off to the east from the parsonage in Medelplana, away to a little brook that flowed past the pastor's cottage at Kollängen. There he dug down and buried all the silver, so as to hide it from the Danes if they should come. Grodt died almost immediately thereafter, without revealing where he had hidden the silver treasure.
Many people have searched the treasury, but until now no one has found it. It is also thought that it may have been found and perhaps melted down, or that the entire story is a fabrication. The legend-encrusted silver treasure still sits brooding on its secret. It may be that some time in the future it will be discovered.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.