Lakes in Illernområdet are found within a nature reserve in Tranås Municipality, Jönköping County, Småland, Sweden. The area is characterized by conifer forests, cultivated land, and hilly terrain shaped by glacial ice deposits. Lake Illern, the centerpiece, is known for its clear waters and rich biodiversity. The region also features old farms and historical agricultural landscapes, adding a cultural dimension to the natural experience.
Last updated: May 20, 2026
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On the left side of the floating dock are very tall reeds. Ducks often stay there. During my visit, I even saw a family of ducks with a total of eight young.
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The playground has now been expanded to include two new shelters.
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Illern is right in the centre of the nature reserve. It's waters are crystal clear, and the biodiversity is rich - a popular spot for fishers, birdwatchers and nature lovers alike. The path around the lake alternates between shady forest sections, and stretches along the shore. There are numerous great beaches and swimming spots.
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The path twists through the forest, with breathtaking views over the lake visible between the branches. The lake is nestled into the centre of the Illern Nature Reserve. The water is clear and the biodiversity is exceptional.
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A beautiful jetty with seating along the sides. A cute pair of ducks were taking a siesta here. A little further up is a fire pit with benches.
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Invites you to grill and linger. A little further on is a jetty with a bathing area (and lifebelt).
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spread over several hundred meters
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Lake Illern is the centerpiece of the nature reserve, known for its remarkably clear waters and rich biodiversity. It's a popular spot for fishers, birdwatchers, and nature enthusiasts, with interesting aquatic plants like alternate-leaved milfoil and broad-leaved pondweed. The path around the lake offers a mix of shady forest sections and scenic lakeside stretches, with numerous great beaches and swimming spots.
Yes, the area is very family-friendly. You'll find facilities like the Lakeside Jetty with Seating, which includes a fire pit, and the Fire Pit and Picnic Area by the Lake, suitable for grilling and lingering, complete with a playground and shelters. There are also designated swimming spots, such as the Picnic Area and Swimming Spot at Lake Illern, which offers benches with fantastic views.
Illernområdet is home to a diverse and abundant bird population, making it an excellent spot for birdwatching. The clear waters of Lake Illern also support rich biodiversity, attracting various aquatic life. Ducks are frequently seen, especially around the jetties and reedy areas.
The area offers well-maintained paths suitable for various fitness levels, including easy hikes around Lake Illern. You can find trails that alternate between shady forest sections and scenic lakeside stretches. For more detailed routes, you can explore options like the 'Around Lake Illern' or 'Kettle holes – Lake Illern loop' trails, which are part of the Hiking in Illernområdet guide.
Yes, Lake Illern is a popular spot for swimming. There are several great beaches and designated swimming spots along its shores, such as the Picnic Area and Swimming Spot at Lake Illern, which is a promontory with benches and views.
Beyond its natural beauty, Illernområdet features old farms and historical agricultural landscapes, adding a cultural dimension to the experience. Rås Gård, a facility managed by Tranås Municipality, is a significant point of interest within the area, offering a glimpse into the region's heritage.
Besides hiking, you can enjoy jogging and skiing on marked trails that originate from facilities like Örsbäcken and Bredstorp sports ground. The clear waters of Lake Illern are also popular for fishing. In winter, the lake becomes a destination for ice skating. For cycling enthusiasts, routes like the 'Rest Area loop from Sjökrogen' are available in the Cycling in Illernområdet guide.
The lakes in Illernområdet offer recreational opportunities throughout the year. Summer is ideal for swimming, picnicking, and enjoying the beaches. Spring and autumn are excellent for hiking and birdwatching due to pleasant temperatures and vibrant nature. In winter, the frozen lake provides opportunities for ice skating.
A great spot is the Picnic Area and Swimming Spot at Lake Illern. This promontory offers several benches with fantastic views of the lake and is spread over several hundred meters. Another option is the Fire Pit and Picnic Area by the Lake, which is suitable for grilling and lingering.
Within Illernområdet, Rås Gård is a notable facility managed by Tranås Municipality that is available for events, conferences, or overnight stays. It also features a bathing area and fire pits, providing a convenient option for visitors looking to stay close to the lake.
The landscape of Illernområdet is characterized by hilly terrain shaped by glacial ice deposits. Visitors can find interesting information panels about the geological history, specifically about 'dead ice' formations from former glaciers that have sculpted the area.


Still not found your perfect lake in Illernområdet? Check out the guides of these regions to see even more beautiful places.