Best natural monuments in Sisak-Moslavina encompass a landscape shaped by the Sava River, featuring extensive floodplains, wetlands, and forests. Key areas include Lonjsko Polje Nature Park and Crna Mlaka Ornithological Reserve, both recognized for their significant biodiversity. The region's natural environment supports diverse ecosystems and avian life, with traditional land use practices contributing to its unique character. These natural sites offer opportunities to observe wildlife and explore varied terrains.
Last updated: May 13, 2026
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In spring the black stork returns to the swamp forests and you can admire it from this tower. The black stork breeds in Eastern Europe and is more tied to swamp forests. It is more of a fish eater than its white cousin.
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Hugely impressive sculpture in the middle of the landscape, commemorating the destruction of 80,000 lives in the Second World War.
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To enjoy from all peace and well hidden. Especially in spring you can enjoy many water birds here. Also the shy white stork can be observed from this hidden position around the forests.
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The area forms a large water reservoir, this lake almost fills up at low tide and at high tide the water reaches the dike with the road.
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Not only are there many wild boars in this natural forest, the rare black stork also lives here.
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is not the only source in Kostajnica, but one of historical importance
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The Kostajnički region abounds with sources of drinking water, and one of the most famous sources is certainly Tekija. This stone water source was restored by the French during their four-year rule. On the stone wall is carved the saying "Drink brother, by God's grace you have been given a drink!". That inscription is still visible today on the stone wall of this water source. The legend of Tekija says that whoever drinks water from Tekija always returns to Kostajnica. That is why we definitely recommend that you drink water at this fountain, which is located in the very center of the city between the parish church of St. Anthony of Padua and the remains of the church of St. Nicholas.
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Sisak-Moslavina County is renowned for its significant natural monuments, primarily the Lonjsko Polje Nature Park, one of Europe's largest and best-preserved natural floodplains. Another key site is the Crna Mlaka Ornithological Reserve, recognized for its exceptional bird species. The Sava River also plays a fundamental role in shaping the region's diverse natural environment.
Yes, several natural monuments in Sisak-Moslavina are suitable for families. For instance, the Observation tower offers a great spot for birdwatching, and the Meadows of Lonjsko Polje provide vast open spaces to explore. Other family-friendly spots include the Tekija Spring, a Nature reserve, and a Water reservoir, all offering gentle natural experiences.
The region is a haven for wildlife, especially birds. Lonjsko Polje Nature Park is home to over two-thirds of Croatia's bird population and is famous for Čigoč, the first European Stork Village. The Crna Mlaka Ornithological Reserve is a crucial staging point for migratory birds, with over 200 species documented, including thousands of endangered ferruginous ducks. You might also encounter indigenous breeds of cattle, horses, and pigs roaming freely in Lonjsko Polje, such as the Turopolje Pig.
The best time to visit largely depends on your interests. Spring and autumn are ideal for birdwatching, especially in Lonjsko Polje and Crna Mlaka, as migratory birds are abundant. Spring also brings lush greenery and the return of black storks to swamp forests. Summer offers pleasant weather for hiking and cycling, while the annual flooding of the Sava River in late autumn and winter creates unique wetland landscapes, though some areas might be less accessible.
Yes, there are various hiking opportunities in Sisak-Moslavina. You can find trails suitable for different skill levels. For example, the Hiking in Sisak-Moslavina guide lists routes like the easy Matija Filjak Mountain Lodge loop from Cepeliš or more moderate options such as the Trail Through Crkveni Jarak – Mikleuška Lake loop from Mikleuška.
Absolutely. The region offers excellent routes for both cycling and mountain biking. The MTB Trails in Sisak-Moslavina guide features routes like the moderate View of Moslavačka Gora loop from Kutina or the challenging Grave of King Petar Svačić – Petrova Gora Monument loop from Topusko. These trails often pass through or near the natural landscapes.
The region blends natural beauty with historical significance. The Grave of King Petar Svačić is a historical site within a forest, marking where the last Croatian king fell in battle. Additionally, the Monument to the Uprising of the People of Banija and Kordun and the sculpture known as Unbelievable are man-made monuments set within the natural landscape, commemorating significant historical events.
Lonjsko Polje Nature Park is unique as one of Europe's largest and best-preserved natural floodplains. Its dynamic ecosystem is shaped by the annual flooding of the Sava River, supporting exceptional biodiversity, including extensive lowland floodplain forests of pedunculate oak and field ash. It's also known for its traditional grazing practices where indigenous breeds roam freely, showcasing a rare human-nature coexistence.
The Crna Mlaka Ornithological Reserve is a special reserve of exceptional European and global value, particularly for wetland birds. Despite being a working carp fish farm, it successfully sustains remarkable biodiversity, serving as a crucial staging point for thousands of migratory and wintering birds. It is integrated into the Natura 2000 ecological network and recognized as a Ramsar site of international importance.
The Sava River is central to Sisak-Moslavina's natural environment. As one of Europe's longest rivers, its annual flood cycles are fundamental to the ecological processes within areas like Lonjsko Polje, enriching the land and supporting diverse ecosystems. Its free-flowing sections and extensive floodplains provide a vital natural flood prevention system and act as a habitat for numerous bird and fish species.
Visitors often appreciate the vastness and untouched beauty of the landscapes, such as the impressive Meadows of Lonjsko Polje. Many are captivated by the rich birdlife, especially from hidden spots like the Observation tower. The blend of natural scenery with historical monuments, like the monumental structures on Petrova gora, also leaves a strong impression, despite some being in a state of disrepair.


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