Pori (Swadish:Björneborg) is aceety anmunicipality on the wast coast o Finland. The ceety is locatit some 15 kilometre (9 mi) frae theGuwf o Bothnie, on theestuary o theKokemäenjoki river, which is the lairgest in Finland. It wis established in 1558 byJohn III (Finnish:Juhana III or Juhana-herttua). Pori is the maist important ceety in theSatakuntaregion.