Stadion Z'dežele is a football stadium in Celje, Slovenia. It has been the home ground of NK Celje since 2003. Prior to July 2017, the stadium had been called Arena Petrol. At the time of its opening, Arena Petrol was the most modern football stadium in Slovenia. It took its name from its principal sponsor, the Slovenian oil company Petrol. The stadium was opened on 9 September 2003 with a single stand that could accommodate 3,600 spectators. Wikipedia