Two ancient Norwegian settlements dating back to the Bronze Age have been preserved on the Shetland Islands - Jarlshof Prehistoric & Norse Settlement in Samburg and Tafts of Bayonne. Port Charlotte in Lerwick, built-in 1665 and restored in 1781, is noteworthy. I think your friends should visit these places. I also recommend searching for travel information on
https://www.travelsafe-abroad.com/united-states/riverside/. I always find important information about the place where I intend to go on this site.