The earliest fortifications on Landenberg hill probably date back to the early 11th century, when the Counts of Lenzburg built a wooden fort there. After the Lenzburg line died out in 1173 their estates around Sarnen were inherited by the Habsburgs. The Habsburgs built a stone ring wall around much of the crown of the hill. While parts of the wall are still visible, very little is known about the buildings inside the wall. The castle was one of the largest castles in central Switzerland. However, in the early 13th century, the castle was apparently abandoned, for unknown reasons. It is unclear whether the Hexenturm, built in the late 13th century, was part of the Landenberg complex, a replacement to it or simply a nearby castle.
The 15th century White Book of Sarnen contains a story about how in the early 14th century local Swiss patriots stormed a castle and burned it on Christmas Eve while the pro-Habsburg nobleman was attending Mass. Traditionally it was believed that the attack happened to Landenberg Castle, though more recent research indicates that it may have been the Hexenturm.
After the castle was abandoned, the walls were slowly broken up for building material and animals were penned inside. In the early 17th century a drawing of the ruins show that the castle walls still stood. At that time it was owned by Hauptmann Marquard Seiler/Seier. After his death, his widow sold the castle and hill to the Canton of Obwalden. The first armory was built there around 1620 on the site of a medieval tower. In 1646 it was decided that the Landsgemeinde, a yearly assembly of all voters in the Canton, would meet in the Landenberg. To hold these assemblies, the ground was cleared and the walls repaired. It continued to meet at Landenberg until it was dissolved in 1998. During construction of the armory and shooting range, many of the remaining castle walls were demolished or buried. During an 1895 renovation of the Landsgemeinde plaza, the old walls were excavated and repaired.
The current armory building was built in 1711 and required demolishing a medieval tower on the south-west corner to open up space. The Baroque building was built by Hans Josef von Flüe. The cannons were stored in the large, open ground floor, while the upper floors stored small arms and armor. The armory was used for its military purpose until 1975. Today it is one of the few intact armories in central Switzerland.
A shooting range was built on the hill top in the early 18th century, but was destroyed in a fire in 1747. The current shooting range building was built in 1752 by Johann Anton Singer. The 1752 building has a large three story center with symmetric single story wings each topped with an onion dome capped tower. The upper story of the central features a richly decorated large ball room or meeting hall.
The ruins of the castle walls cover an area of about 40 by 90 meters, making it one of the largest castles in central Switzerland. Today long stretches of low stone walls are still visible. The walls are up to 1.36 m thick. The gate house is on the western wall, but that section of the wall was totally demolished so nothing is known about the gate. The western corner was the highest part of the hill and was guarded by a 10.5 m square tower.References:
The Moszna Castle is one of the best known monuments in the western part of Upper Silesia. The history of this building begins in the 17th century, although much older cellars were found in the gardens during excavations carried out at the beginning of the 20th century. Some of the investigators, including H. Barthel, claimed that those cellars could have been remnants of a presumed Templar castle, but their theory has never been proved. After World War II, further excavations discovered a medieval palisade.
The central part of the castle is an old baroque palace which was partially destroyed by fire on the night of April 2, 1896 and was reconstructed in the same year in its original form by Franz Hubert von Tiele-Winckler. The reconstruction works involved an extension of the residence. The eastern Neogothic-styled wing of the building was built by 1900, along with an adjacent orangery. In 1912-1914, the western wing was built in the Neo-Renaissance style. The architectural form of the castle contains a wide variety of styles, thus it can be generally defined as eclectic.
The height of the building, as well as its numerous turrets and spires, give the impression of verticalism. The whole castle has exactly ninety-nine turrets. Inside, it contains 365 rooms. The castle was twice visited by the German Emperor Wilhelm II. His participation in hunting during his stay at the castle was documented in a hand-written chronicle in 1911 as well as in the following year. The castle in Moszna was the residence of a Silesian family Tiele-Winckler who were industrial magnates, from 1866 until the spring of 1945 when they were forced to move to Germany and the castle was occupied by the Red Army. The period of the Soviet control caused significant damage to the castle's internal fittings in comparison to the minor damage caused by WWII.
After World War II the castle did not have a permanent owner and was the home of various institutions until 1972 when it became a convalescent home. Later it became a Public Health Care Centre for Therapies of Neuroses. Nowadays it can be visited by tourists since the health institution has moved to another building in the neighbourhood. The castle also has a chapel which is used as a concert hall. Since 1998 the castle housed a gallery in which works of various artists are presented at regular exhibitions.
Apart from the castle itself, the entire complex includes a park which has no precise boundaries and includes nearby fields, meadows and a forest. Only the main axis of the park can be characterised as geometrical. Starting from the gate, it leads along the oak and then horse-chestnut avenues, towards the castle. Further on, the park passes into an avenue of lime trees with symmetrical canals running along both sides of the path, lined with a few varieties of rhododendrons. The axis of the park terminates at the base of a former monument of Hubert von Tiele-Winckler. On the eastern side of the avenue there is a pond with an islet referred to by the owners as Easter Island. The islet is planted with needle-leaved shrubs and can be reached by a Chinese-styled bridge. The garden, as part of the whole park complex was restored slightly earlier than the castle itself. Preserved documents of 1868 state that the improvement in the garden's aesthetic quality was undertaken by Hubert von Tiele-Winckler.