Resmo Church was built in the early 11th century and it is one of the oldest still used church in Sweden. The apsis, nave and western tower date from the original church. Wooden arches and the sacristy were added in the 18th century. There were originally two towers, but the eastern one was demolished in 1826.
There are some frescoes remaining from the late 12th century. The interior originate mainly from the 18th century.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.