Nominated for World Heritage Site status in January 2008, Lonjsko Polje is a 506-sq-km stretch of swampland (polje means ‘field’) in the Posavina region, between the Sava River and Mt Moslavačka Gora. Seated along Lonja River, a Sava tributary that gives the park its name, this huge retention basin is famed for the diversity of its flora and fauna.
