Rapperswil Castle was built in the early 13th century AD by the House of Rapperswil. It is surrounded on three sides by the Lake Zürich and by those upper section on the northwestern Seedamm area. Thus, the castle was well protected, dominating the old town of Rapperswil, and controlling the water way between Walensee and Lake Zürich on its most narrow part, as well as the medieval Gotthard Pass route between Lombardy and Zürich.
Rapperswil Castle dates back around 1200 to 1220, and it was first mentioned in 1229 on occasion of the foundation of the Rüti Abbey. The castle was built by Count Rudolf II and his son Rudolf III von Rapperswil, when the nobility of Rapperswil moved from Altendorf (Alt-Rapperswil) across the lake. As before in the 11th and 12th century AD, the family acted as Vogt of the Einsiedeln Abbey. Sandstone from the Lützelauisland was used to build the castle, the town walls and the city.
The first chapel was associated to the castle, but the chapel was located outside of its walls and separated by a trench. The preceding building of the Liebfrauenkapelle was built as an ossuary around 1220 to 1253.
In 1350 an attempted coup by the aristocratic opposition (a central person was Count Johann II) in the city of Zürich was forcefully put down, and the town walls of Rapperswil and the castle were destroyed by Rudolf Brun. Eis-zwei-Geissebei, a Carnival festival hold in Rapperswil on Shrove Tuesday, may go back to the siege and destruction of the city of Rapperswil. The battlements and the castle were rebuilt by Albrecht II, Duke of Austria in 1352/54.
After the extinction of the line of Habsburg-Laufenburg in 1442, the castle was given to the citizens of Rapperswil. Ending Old Zürich War, Rapperswil was controlled by the Swiss Confederation from 1458 to 1798 as a so-called Gemeine Herrschaft, i.e. under control of two cantons of the Old Swiss Conferation and their representant, a Vogt, and Rapperswil castle became an administration site respectively military base and prison.
Over the course of time, the castle fell into disrepair. In 1870 the castle was leased for 99 years from the local authorities by a post-November 1830 Uprising Polish émigré, Count Wladyslaw Broel-Plater, who had been in Switzerland since 1844. At his own expense he restored the castle, and on 23 October 1870 the Polish National Museum was established.References:
Louisenlund is a site with one of Denmark's largest collection of megaliths. Some 50 stones standing upright among the trees, many of them over 2.5 metres high. The megaliths, which bear no inscription, stand on low mounds or over graves where the remains of burnt bones are buried. In the early Bronze Age and late Iron Age (1100 BC), it appears to have been common practice to set megaliths over graves of this kind. The stones stand alone or in small groups. As the site has not been archeologically investigated, it is not known why the stones were raised there. Another important megalithic site on Bornholm is Gryet, a small wooded area 5 kilometres west of Nexø. Originally it had more than 60 megaliths. Some have now been removed while half those remaining have fallen to the ground. The highest of them, once standing on the mound towards the south of the wood, was removed in the 17th century to be used as a gravestone. Louisenlund was bought by King Frederik VII when he visited Bornholm in 1851. He named it after his mistress, Countess Louise Danner.