Visited this one in Sweden last summer: https://www.eketorpsborg.se/eketorp-fort/
Not everything was available/open due to Covid-19. But very interesting place from early Scandinavian iron age. (300 AD).
Another fun one is Jamtli [1] (Jämtlands läns folkhistoriska museet) in Östersund, which holds a museum and about ten acres of grounds with historical reconstructions of Swedish homes, farms, and businesses from roughly the 18th c. to the present day. Since 1986, actors have moved into the historical buildings every summer and recreated how people lived, worked and spoke in the past. [2] It's similar to colonial Williamsburg in the US but not focused on one particular point in time -- great fun!
Another really neat one is Ötzi-Dorf[1] in Austria, a recreation of an ancient village modeled after the items and equipment found on the body of Otzi the Iceman. Very cool to walk around.
1. https://jamtli.com 2. https://en.wikipedia.org/wiki/Jamtli