Lyse Abbey was founded in 1146 by Sigurd, Bishop of Bergen, on farmland that he owned, as the Christianisation of Norway was nearing completion. The first monks were brought from Fountains Abbey in Yorkshire, England. This was the first Cistercian monastery in Norway and was modelled on others built in England and France.
As with all Cistercians, the monks took a vow of poverty. Renouncing all sources of income except from farming, they developed considerable skill in farming operations and management. Over time, this led to the abbey acquiring many other farms in the area, making it ever more rich and powerful. In all, the monastery had about 50 other farms in Os with at least as many more in other areas.
The abbey was dissolved in 1537 when Christian III of Denmark decreed Lutheranism to be the state religion of Norway. The abbey’s possessions were confiscated, becoming the property of the King. Over the next two centuries, the stones of the monastery structures were gradually removed and contributed to buildings such as the Rosenkrantz Tower in Bergen, and Kronborg Castle in Helsingør in Denmark. Some stones were shipped as far as Germany.
The ruins are protected as a national monument and archaeological work to preserve and record the site continues. The monastery is a well-visited tourist site with good nature walks nearby. It is common for couples today to be married at the ruins, or at least to have wedding photographs taken there.References:
German crusaders known as the Livonian Brothers of the Sword began construction of the Cēsis castle (Wenden) near the hill fort in 1209. When the castle was enlarged and fortified, it served as the residence for the Order's Master from 1237 till 1561, with periodic interruptions. Its ruins are some of the most majestic castle ruins in the Baltic states. Once the most important castle of the Livonian Order, it was the official residence for the masters of the order.
In 1577, during the Livonian War, the garrison destroyed the castle to prevent it from falling into the control of Ivan the Terrible, who was decisively defeated in the Battle of Wenden (1578).
In 1598 it was incorporated into the Polish-Lithuanian Commonwealth and Wenden Voivodship was created here. In 1620 Wenden was conquered by Sweden. It was rebuilt afterwards, but was destroyed again in 1703 during the Great Northern War by the Russian army and left in a ruined state. Already from the end of the 16th century, the premises of the Order's castle were adjusted to the requirements of the Cēsis Castle estate. When in 1777 the Cēsis Castle estate was obtained by Count Carl Sievers, he had his new residence house built on the site of the eastern block of the castle, joining its end wall with the fortification tower.
Since 1949, the Cēsis History Museum has been located in this New Castle of the Cēsis Castle estate. The front yard of the New Castle is enclosed by a granary and a stable-coach house, which now houses the Exhibition Hall of the Museum. Beside the granary there is the oldest brewery in Latvia, Cēsu alus darītava, which was built in 1878 during the later Count Sievers' time, but its origins date back to the period of the Livonian Order. Further on, the Cēsis Castle park is situated, which was laid out in 1812. The park has the romantic characteristic of that time, with its winding footpaths, exotic plants, and the waters of the pond reflecting the castle's ruins. Nowadays also one of the towers is open for tourists.