Best lakes in Frederikssund are situated within a region known for its connection to Roskilde Fjord and the broader Fjordlandet area. The municipality and its surroundings offer various water recreational areas, including beaches and inland lakes. These locations provide opportunities for swimming, walking, and enjoying nature. The landscape features both fjord-side environments and more secluded forest-enclosed lakes.
Last updated: May 15, 2026
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A lovely town with good hills
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The public park features old trees and small ponds.
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The area was originally used by Roskilde Kloster as pasture land. The monastery had over 1,000 hectares of land and was one of the largest landowners in Roskilde. In 1819 the monastery created a park on part of its land. The park contained several artificial lakes that had been created as fishponds as early as the 18th century. The park was created for the nuns of the convent, but was also open to other citizens of the city. In 1904 Roskilde Kloster decided to double the area of the park. The expansion was completed in 1906 and some of the former fish ponds were re-established here after they had dried up. Between 1908 and 1923 the city bought about 50 hectares of land from the monastery. In 1934 the city council decided to build Folkeparken on part of this area.
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Inspired by the scenic (fantastic) spot of Frogmore (or Froschmoorstetten) in J.R.R. Tolkiens „The Hobbit" novel, this place reminded me very much on how I imagined this place when I heard about it the first time. Overwhelmed by frogs and toads in the marshes and bogs, an occassional grey winged heron, and swarms of little midgets filling this place with vivid life. It just misses the „Floating Log Inn" :)
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This is a really peaceful spot. You can rest on a bench and enjoy the view of the pond.
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The forest, which is about 3km from Roskilde, is under nature protection and borders directly on the Roskilde Fjord.
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Gerhøj is a small place on the Roskilde Fjord with about 700 inhabitants. The Kro was closed for years and was taken over by local people in 1997 and brought back to life. The gastronomy offers a kitchen with Danish and French influence. The small beach hotel has 10 rooms. King Chr. X visited the Kro once. Where he sat with his family is the "King's Corner" today, of course with portraits of the queen and king. The harbor is a cozy place where recreational fishermen still catch eels and fish in the fjord. You can also swim there and there are also some pitches for mobile campers.
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Frederikssund and the surrounding Fjordlandet region offer several excellent family-friendly water spots. Within Frederikssund, Pond in Folkeparken is a large public park with small ponds and open lawns. For beaches, consider Kulhuse Strand, Marbæk Strandpark, and Kalvøen Strand, all offering good swimming and facilities. The shallow, calm waters of Roskilde Fjord are also ideal for families.
Yes, several spots welcome dogs. Lake Nellesø in Ganløse Eget forest is explicitly dog-friendly. Additionally, dogs are permitted on a leash outside the Blue Flag zone at Kulhuse Strand during summer and can be off-leash in winter. The 2-kilometer path around Himmelsøen also welcomes dogs on walks.
The region boasts diverse natural beauty. You'll find the expansive Roskilde Fjord, an international nature conservation area known for its birdlife. Inland, Lake Nellesø is nestled in an impressive tunnel valley. Pond in Folkeparken features old trees, small ponds, and streams. Other lakes like Avnsø are enveloped by serene forests, offering picturesque environments.
The area around Frederikssund's lakes is excellent for various outdoor activities. You can enjoy swimming at numerous beaches and lakes, kayaking or paddleboarding in Roskilde Fjord, and fishing. For cycling, there are many MTB and gravel biking routes, such as those found in the MTB Trails in Frederikssund guide and the Gravel biking in Frederikssund guide. Running enthusiasts can explore routes detailed in the Running Trails in Frederikssund guide.
Yes, there are several pleasant walking opportunities. Kattinge Vig offers an easy hike on a well-prepared path. Himmelsøen features a scenic 2-kilometer path encircling the lake, perfect for a leisurely stroll. Many of the beaches like Marbæk Strandpark and Kalvøen Strand also provide ample space for walks along the shore.
The lakes and beaches in Frederikssund are enjoyable year-round, but the best time depends on your preferred activities. For swimming and water sports, the summer months (June-August) are ideal. Avnsø is popular for swimming year-round. Spring and autumn offer pleasant temperatures for hiking and cycling, with beautiful foliage changes. Winter can be serene for quiet walks, and some lakes might even offer ice skating opportunities if conditions allow.
For visitors requiring accessible paths, Kattinge Vig is noted for its easy, well-prepared path that is accessible to most people. Many of the larger beach parks, such as Marbæk Strandpark and Kalvøen Strand, also offer relatively flat and open areas suitable for easier access.
Yes, several locations offer facilities. Pond in Folkeparken has a cafe. Marbæk Strandpark and Avnsø Badesø provide picnic tables and bonfire sites. Kulhuse Strand has a kiosk and toilets. Gershøj Harbour on Roskilde Fjord also features a beach hotel with gastronomy. These spots make it easy to enjoy a full day out.
For exceptionally clean fresh water, Avnsø Badesø in Lejre (near Frederikssund) is highly recommended. It's known as one of Zealand's cleanest lakes, with a depth of 6-8 meters, a jetty, and a small sandy beach. Himmelsøen, a clear groundwater lake, also offers excellent swimming conditions with a sandy beach and a unique floating bridge.
The region has interesting historical connections. At Kulhuse Strand, you can find the remains of the English Entrenchment from 1808. Marbæk Strandpark is notable for the historic Sct. Olaf's spring, which flows into Roskilde Fjord. Pond in Folkeparken was originally part of Roskilde Kloster's land, with artificial lakes created as fishponds as early as the 18th century.
Visitors particularly appreciate the tranquility and natural beauty. Spots like Lake Nellesø are praised for their peaceful atmosphere, perfect for enjoying the view. The easy accessibility of paths, such as at Kattinge Vig, makes nature enjoyable for many. The diverse opportunities for swimming, walking, and observing wildlife, especially birdlife in Roskilde Fjord, are also highly valued.
Yes, Himmelsøen features a distinctive 140-meter floating bridge, which adds a unique element to the lake experience. The historic Sct. Olaf's spring flowing into Roskilde Fjord at Marbæk Strandpark is another notable natural and historical feature.


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