The Pilgrimage Church of St John of Nepomuk is the final work of Jan Santini Aichel, a Bohemian architect who combined the Borrominiesque Baroque with references to Gothic elements in both construction and decoration.
In 1719, when the Roman Catholic Church declared the tongue of John of Nepomuk to be incorruptible, work started to build a church at Zelená hora, where the future saint had received his early education. It was consecrated immediately after John's beatification in 1720, although construction works lumbered on until 1727. Half a century later, after a serious fire, the shape of the roof was altered.
The church, with many furnishings designed by Santini himself, is remarkable for its gothicizing features and complex symbolism, quite unusual for the time. In 1993, it was declared a UNESCO World Heritage Site. The nomination dossier pointed out Santini's mathematical ratios in its architecture which aimed at 'the creation of an independent spatial reality', with 'the number 5 being dominant in the layout and proportions' of the church.
The central church along with its adjacent cloister is uniformly projected and built structure. Architecture of this building is very minimalistic and enormously effective. It combines Baroque and Gothic elements which in fact points to the age when John of Nepomuk lived, worked and was martyred. The construction of church is based on geometry of circle while constantly repeating number five as a reference to Nepomuk's five stars. Those stars, according to a legend, appeared above his body when he had died.References:
Steinvikholm Castle is an island fortress built between 1525 to 1532 by Norway's last Catholic archbishop, Olav Engelbrektsson. Steinvikholm castle became the most powerful fortification by the time it was built, and it is the largest construction raised in the Norwegian Middle Ages.
The castle occupies about half of the land on the rocky island. The absence of a spring meant that fresh water had to be brought from the mainland. A wooden bridge served as the only way to the island other than boat. Although the castle design was common across Europe in 1525, its medieval design was becoming obsolete because of the improved siege firepower offered by gunpowder and cannons.
The castle was constructed after Olav Engelbrektsson returned from a meeting with the Pope in Rome, presumably in anticipation of impending military-religious conflict. As Archbishop Engelbrektsson's resistance to the encroachment of Danish rule escalated, first with Frederick I of Denmark and his successor Christian III of Denmark, Steinvikholm Castle and Nidarholm Abbey became the Catholic Church's military strongholds in Norway. In April 1537, the Danish-Norwegian Reformation succeeded in driving the archbishop from the castle into exile in Lier in the Netherlands (now in Belgium), where he died on 7 February 1538. At the castle the archbishop left behind St. Olav's shrine and other treasures from Nidaros Cathedral (Trondheim). The original coffin containing St. Olav's body remained at Steinvikholm until it was returned to Nidaros Cathedral in 1564. Since 1568 St. Olav's grave in Nidaros has been unknown.
From the 17th to 19th century, the island was used as a quarry and some of its masonry was sold and removed from the site. This activity was condoned by the Danish-Norwegian authorities as a way of eliminating a monument to the opposition of the Danish–Norwegian Union.
Steinvikholm fort is owned and operated today by The society for the Preservation of Norwegian Ancient Monuments. The island has been the site of the midnight opera which details the life and struggles of the archbishop. The opera is held in August annually. The opera is organized by Steinvikholm Musikkteater since the beginning in 1993.