The defence tower next to the Brunflo Church dates from the 1170s and was originally part of the medieval church. The 30m high rectangular (9m x 9m) tower is an impressive and very rare structure in northern Sweden. There was also a similar tower in ruined Sunne Church. The oldest church bell in the tower was casted in Stockholm in 1665.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.