Burg Finstergrün consists of two castles. The old castle, today in ruins, dates probably from the 12th century. The new castle, built around the old castle was completed in 1908. However, it looks very similar to a historical castle because it was built in the style of the 13th century. Today Finstergrün is a youth hostel.
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.