local authorities advertise cherdyn to tourists as the capital of the ancient principality of great perm. this information is based on an 1835 study by the swedish historian a.m. strinnholm as well as the 1815 study by the russian historian nikolay karamzin. strinnholm mentioned that the last trip of scandinavian vikings to bjarmia (aka the great perm) happened in 1222. four well-equipped ships of haakon iv of norway burned bjarmian towns to the ground.