Allaman Castle has its origins in the 11 and 12th centuries but the main components were built by Louis, Duke of Savoy, in 1253.
The wealthy Genevan philanthropist Count Jean-Jacques de Sellon, who owned the property until 1839, gave accommodation at the castle to political refugees, such as Napoleon's brother Joseph Bonaparte, Empress Joséphine de Beauharnais, Voltaire, Franz Liszt and George Sand. In 1820 de Sellon founded the Society of Peace, forerunner of the League of Nations and the United Nations Organization (UNO) and in 1830 the First International Peace Summit was held in Château d'Allaman. Since then, the Castle has also been referred to 'The Castle of Peace'. De Sellon was also instrumental in the abolition of the death penalty in Switzerland.
The Castle of Allaman is one of the largest private properties of Switzerland. The estate covers over 33 hectares and offers some 6,200 m2 of living space. The estate is surrounded by private forests, parks, gardens and Grand Cru vine yards. Recently completely restored and transformed, the Castle is owned by a Swiss family.
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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.