Klempenow Castle was built during the time of German settlement in Pomerania in the 13th century and formed part of a series of fortifications on the border with Mecklenburg. The original castle consisted of two towers and a three metre thick defensive wall. It has been substantially altered during the centuries.
During the 17th century it acquired more or less the present shape and look. When Pomerania was ruled by Sweden, the castle was given as a fief to Dodo zu Innhausen und Knyphausen by the Swedish king. From 1762, it belonged to the Swedish Crown. It has since housed several different residents; after World War II, it housed refugees expelled from former German lands and at one time as many as fourteen families lived in the castle. After 1990, a renovation of the castle was carried out.References:
Frösöstenen is the northern-most raised runestone in the world and Jämtland's only runestone. It originally stood at the tip of ferry terminal on the sound between the island of Frösön and Östersund. The stone dates to between 1030 and 1050. It has now been relocated to the lawn in front of the local county seat due to the construction of a new bridge, between 1969 and 1971, on the original site.
Frösö runestone inscription means: Austmaðr, Guðfastr's son, had this stone raised and this bridge built and Christianized Jämtland. Ásbjörn built the bridge. Trjónn and Steinn carved these runes.