Kronoberg Castle is a medieval ruin located on an island in lake Helgasjön. In 1444 Lars Mikaelson, the bishop of Växjö, built a stone building on the lakeshore. During the Dano-Swedish War of 1470-1471, Danish forces destroyed the house. It was reconstructed and fortified after peace was restored in 1472. During the Swedish Reformation the castle and its estate were confiscated by Gustav Vasa.
In 1542, during the Dacke War, Kronoberg was taken over by rebels led by Nils Dacke. The revolt was suppressed in 1543, and control reverted to the crown. Due to its strategic location near the border between Sweden and Denmark at the time, the castle was further fortified, and became a stronghold in this part of Småland. The king's son John III ordered additional improvements that never were carried out. The castle had great military significance during the Northern Seven Years War (1564-1570). In the winter of 1568, Eric XIV used Kronoborg as a support point while beating back a Danish attack from Skåne. In 1570 the castle was successfully besieged and burned by the Danes. Between 1576 and 1580 construction continued, after which the castle had at least 50 cannon. Duke Charles continued work on the fortifications, but in the end of January 1612 the castle was again taken and burned by Danish troops under Breide Rantzau. Reconstruction was not started until 1616.
As late as the reign of Charles XI Kronoberg castle was in good condition. However, after the Treaty of Roskilde was signed in 1658, the Swedish-Danish border was moved to Øresund, and Kronoberg castle lost its military significance. Neglected, the building began to decay and became a ruin.
The castle ruin is open to tourists in the summer months. It is located just short drive from Växjö, Sweden.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.