Monteagudo de las Vicarías Castle was located in the centre of the town within the defensive walls that completely surrounded it and that can still be seen throughout the town. It was built between the 15th and 16th century by the Hurtado de Mendoza family, and it has towers and buttresses on the corners, a great indoor courtyard and an octagonal shaped keep. Recent restorations have been carried out on the battlement hexes, the arches and the arcaded gallery.
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.