The Płock Diadem (Polish: Diadem płocki) is a reliquary crown held in the city of Płock, in central Poland. It was created in the beginning of the 13th...

type of kiełbasa named after Wzgórze Tumskie (Cathedral Hill), and baleron płocki, a local type of baleron, a popular Polish smoked lunch meat. Płock is the...