- hradloket.cz en/loket-castle/
- http://polotsk.museum.by en/node/33160Excavations by V. Bulkhin. Upper Castle, Polotsk, 1978 Twisted ring from island of Gotland. 11th century. Gold 900*, filegreed. D-25,0 mm.Bulunamadı: vierchni
- castlerentals.net country/poland/
- visithungary.com category/royal-castles--and--…
- visit-belarus.com en/polotsk-attractions/For the first time, Polotsk was mentioned in the “Tale of Bygone Years”, in the year 862, which makes it the oldest city in Belarus.Bulunamadı: vierchni
- tr.mgwiki.top wiki/First_Battle_of_Polotsk
- photobuildings.com list.php…Bulunamadı: vierchni