Best lakes around gmina Knyszyn are primarily found on the northwestern edge of the Knyszyn Forest in northeastern Poland. The region is characterized by numerous rivers, streams, and nearly 500 springs. Jezioro Zygmunta Augusta, an artificial reservoir, stands out as the main lake, historically significant as one of Poland's oldest, constructed before 1559. While swimming is prohibited in Jezioro Zygmunta Augusta due to its use for carp breeding, the lake offers historical interest and is a notable birdwatching location.
Last updated: July 2, 2026
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Fenced ☹️ no access.
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By the reservoir there is a gym, benches, a small pier, a shelter with a grill and a stone inscription: Jasionówka Commune. Calm place.
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Main access to the lake with a dam on the Nareśl River. Next to it is a fishing farm with a lake. The Nareśl river itself flows quite nicely here. Access via good asphalt. Generally, it is private land and access to the lake from this place is impossible. Only the views remain.
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The first viewpoint from the road from Knyszyn, from which you can see the lake well. The gravel road is quite good.
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The Hornosta Brickyard was established in the 19th century. It belonged to the Hornosta estate. The reservoir is very deep with a very uneven bottom.
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The remains of the Manor Park of the Hornosta estate, which included, among others, two manor parks, a brickyard, a villa, and several others, creating the entire complex of the Hornosta estate, which is included in the register of monuments. The origins date back to around 1800.
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"The founder of the brickyard was Józef Roszczewski, the then owner of the Hornosta estate (see Hornosta), who took it over before 1884 from his grandfather - Jan Hofer. The reason for building the brickyard was the constantly increasing debt of the estate, which was intended to be repaid with the income from brick production. Brickyard, constantly modernized, it gave 1.5 thousand rubles of annual income in 1904, and 3 thousand rubles in 1914, which, however, did not enable the liquidation of debts. Currently, the brickyard is in private hands. Access from Hornostaj is a bit of cobblestones and a bit of gravel. The reservoir is very deep in places, perhaps 12 m, and some say much more. Several people have already drowned here. The banks are quite slippery due to the clay.
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In this place a long time ago there was a Manor Park, now registered as a monument. Another Hornosta Manor Park was on the north. from the Hornosta Cegielnia. There were also ponds there. Currently, the area is in private hands. Access from the south is via a dirt road and I recommend using the same road to return. Next is a private yard where a dog sometimes runs loose.
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The most notable lake in Gmina Knyszyn is Jezioro Zygmunta Augusta, an artificial reservoir with significant historical importance, dating back to before 1559. While swimming is prohibited due to its use for carp breeding, it offers excellent birdwatching opportunities and tranquil scenery. You can get scenic views from View of Lake Zygmunta Augusta and View of Lake Zygmunta Augusta and Nareśl Dam.
Yes, the Jasionówka Reservoir is a small water body designed with recreational infrastructure, making it suitable for families. It features amenities like a large roof, benches, a small pier, and a shelter with a grill, providing a calm place for relaxation.
Around Jezioro Zygmunta Augusta, you'll find low, marshy shores abundant with reeds and shrubs, creating a rich habitat for diverse bird species. The broader Gmina Knyszyn area, part of the Knyszyn Forest, is characterized by numerous rivers, streams, and nearly 500 springs, offering a varied natural landscape.
Jezioro Zygmunta Augusta is one of Poland's oldest artificial reservoirs, constructed by damming the Nereśl River before 1559. Its creation is a remarkable historical landmark, with legends even attributing its origin to the sorcerer Pan Twardowski, though it was likely founded by King Sigismund Augustus.
Swimming is generally prohibited in Jezioro Zygmunta Augusta, as it is currently used for carp breeding. While other smaller water bodies exist, the region is not primarily known for recreational swimming lakes.
Yes, Jezioro Zygmunta Augusta is an excellent spot for birdwatching. Its extensive reed beds and location on migration routes attract diverse species, especially during spring and autumn. You might spot birds like the White-tailed Eagle, Western Marsh Harrier, Common Pochard, and Whooper Swan.
While direct water access to Jezioro Zygmunta Augusta is limited, the surrounding Knyszyn Forest Landscape Park offers various outdoor activities. You can explore numerous hiking and running routes. For example, consider routes like the Krzemianka Educational Trail or the Krzemianka Nature Reserve loop. Find more options in the Hiking around gmina Knyszyn or Running Trails around gmina Knyszyn guides.
Yes, you can visit the Ponds in Hornostaje – Remnants of the Manor Park. These ponds are part of the historical Hornosta estate, which dates back to around 1800 and is included in the register of monuments.
The best time to visit, especially for birdwatching at Jezioro Zygmunta Augusta, is during spring and autumn when migration routes are active. For general relaxation and enjoying the tranquil scenery, the warmer months offer pleasant conditions, though access to the shoreline can be restricted in some areas due to dense reeds.
Access to the shoreline of Jezioro Zygmunta Augusta can be restricted in some areas due to private ownership and dense reeds. While viewpoints like View of Lake Zygmunta Augusta offer scenic perspectives, direct access to the water is often limited or fenced off, particularly near the fishing farm at the View of Lake Zygmunta Augusta and Nareśl Dam.
The Cegielnia Hornostaje Reservoir, associated with a historical brickyard, is known for being very deep in places, possibly up to 12 meters or more, with a very uneven bottom. Its banks can be quite slippery due to the clay.


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