Croatian Nature park Lonjsko polje is 50,650 ha big and is listed as the biggest, protected wetland area in all of the area around river Dunav. It is located in the plains of river Sava, between Sisak and Stara Gradiška. It is made of three fields: Lonjsko, Mokro and Poganovo.
The most important ecological element in the park are the floods that can happen in any time of year and are the cause of a big variety of habitats typical for flooded areas (wet forests, grass fields, plains, wetland habitats).
Around 12,000 ha of the Croatian Nature park Lonjsko polje are used as grazing sites. These are the last examples of a cultural landscape that existed in all of middle Europe up until the end of 19th century. The Croatian breeds of pigs and cows are mostly bred here. Also, this is the location of one of the biggest carp hatcheries found in all of the Dunav area.
The biggest complexes of naturally flooded lowland forests in Europe can be found in the Croatian Nature park Lonjsko polje. The specific species for the forest populations is the Slavonian oak. Almost 70% of the nature park is covered by flooded lowland forests.
As a part of the nature park Lonjsko polje is the first ornithological reserve in Croatia, called Krapje dol, which became protected in 1963. It is located between the village Drenov Bok and Krapje and serves as a nesting ground for the Eurasian spoonbill and a couple of other species of heron (Grey heron, Small white heron, Purple heron…).
The village Čigoć, located on the right side of river Sava, is famous because of the large number of stork nests on the roofs of the wooden Posavina houses. In the year 1984, the village was proclaimed as the first European stork village.
The village Krapje, as a part of the nature park Lonjsko polje, is significant for its preserved traditional wooden architecture (Posavina house). Beside the traditional houses, a lot of public building can also be visited (church, rectory, firehouse, cemetery…). It is the only village that has the status of the architectural heritage and, since 1995, celebrates the European heritage Day.
As a part of the tourist program of the park, you can participate in: visit to the village Krapje, boat rides on solar drive, visit storks in the village Čigoć, observe birds in the ornithological reserve Krapje dol etc. There are also a lot of marked bicycle routes (30 to 70 kilometres).