Best castles around Asselfingen are found in the Lonetal valley, a region characterized by its historical significance and varied natural landscapes. While Asselfingen itself features remnants of medieval castle sites like Burg Asselfingen, the broader area offers a range of more substantial castle experiences. The region provides opportunities to explore both well-preserved structures and extensive ruins, often situated on scenic overlooks. This area is a key part of the Swabian Alb, offering a blend of cultural heritage and outdoor exploration.
…Last updated: June 23, 2026
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Built around 1450, renovated from 1972 to 1977. A four-story structure with two side wings, corner bay windows, and gables. A south wing with a late Gothic core dating from around 1450, the original north wing with four round corner towers, and arched sheds.
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Interesting facility with a beautiful view. Below the castle is a nice parkour for archery
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The place was first mentioned in the 12th century. In 1568 the place passed to the Riedheim family, who are still the owners of Harthausen Castle today.
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Location: Corner spur at the confluence of the Lone and the Hürbe. Altitude: 513m at the highest point. 498m in the courtyard. 480m in the Lone valley. Size and scope: 3996m2 and 300m ring wall. The Kaltenburg stands on a mountain spur above the Hürbe and Lone valleys. The three round towers still visible date from the Wilhelminian period, the two corner towers from the 17th century. First mentioned in 1240. The castle complex has been gradually renovated for several years. It's always worth a visit and the view is great.
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Beautiful walls with a view of Sontheim
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A place with a great view
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Harthausen Castle is a double castle in Harthausen. It is located in the Günzburg district and belongs to the municipality of Rettenbach. It is a four-story complex with two side wings and distinctive tail gables. It is owned by the baronial Riedheim family.
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Story Originally the Riedheim ministerials were the Lords of Graisbach, who had their noble seat in Riedheim and from then on named themselves after this place. Bertold the Riedhaimer is mentioned in a document from 1312. In 1384, the brothers Erhard and Winhard Riedhaimer von Riedheim came together to jointly manage their inheritance in Riedheim. Konrad von Rietheim is mentioned in 1347. The family initially settled in Remshart (today a district of the municipality of Rettenbach) near Günzburg; the headquarters near Holzheim was sold to the Riederer von Paar family at the end of the 14th century.
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The region around Asselfingen offers several significant castles and ruins. Among the most popular are Kaltenburg Ruins, known for its extensive remains and valley views, and Güssenburg, a well-preserved ruin with impressive vistas. Brenz Castle is another beautiful, renovated historical site located directly on the Brenz river.
Within Asselfingen itself, you'll find the historical sites of Burg Asselfingen and Burgrest Asselfingen. These are primarily remnants rather than well-preserved structures, offering a glimpse into the area's medieval past. Burg Asselfingen includes some newer parts and a moat, while Burgrest Asselfingen is a 'disused castle' with nothing remaining today.
Many castles and ruins in the area, such as Kaltenburg Ruins and Güssenburg, are situated on scenic overlooks. They offer magnificent views down into the surrounding valleys, including the Hürbe and Lone valleys, and across the picturesque countryside.
Yes, several castles in the region are considered family-friendly. Güssenburg and Brenz Castle are both highlighted as suitable for families, offering engaging historical exploration and pleasant surroundings.
The area around Asselfingen, including the Lonetal valley, is excellent for outdoor activities. You can find numerous hiking and cycling routes. For example, there are easy hiking loops like the 'Mammoth Climbing Structure – Climbing Moose Sculpture loop' from Asselfingen. You can explore more options in the Hiking around Asselfingen guide or the Cycling around Asselfingen guide.
The best time to visit the castles and explore the surrounding nature is generally during the warmer months, from spring to autumn. This allows for comfortable hiking and better enjoyment of the outdoor castle ruins and scenic viewpoints. Winter visits can be beautiful, but some paths might be challenging, and certain facilities may have reduced hours.
While popular sites like Kaltenburg and Güssenburg attract visitors, you might find a quieter experience at places like Eselsburg Castle Ruins. Although not much remains of the castle itself, the climb offers a magnificent view of the valley and surrounding rocks, often with fewer crowds.
Visitors frequently praise the historical atmosphere and the stunning views offered by the castle ruins. The extensive nature of sites like Kaltenburg Ruins and the well-preserved state of Güssenburg are often highlighted. The blend of history with beautiful natural landscapes is a key draw.
Many castles offer excellent photographic opportunities, especially those with panoramic views. Kaltenburg Ruins and Güssenburg are popular for their scenic backdrops. Brenz Castle, with its renovated architecture and location directly on the river, also provides picturesque scenes.
Hiking trails around the castles vary in difficulty. You can find easy loops, such as the 'Hiking loop from Asselfingen' (3.8 km), which are suitable for beginners or casual strolls. More moderate options, like the 'Musk Ox Climbing Structure – At the Little Castle Lindenau loop' (7.9 km), are also available. Check the specific route details in the Hiking around Asselfingen guide for more information.
Generally, dogs are welcome on many outdoor trails and at open-access castle ruins, provided they are kept on a leash. However, specific rules can vary, especially for indoor areas or protected natural sites. It's always advisable to check local signage or specific castle websites for any restrictions before your visit.
Leipheim Castle stands out with its three-story, Renaissance-style saddle-roof building, parts of which date back to the 11th century. It features a round tower with a convexly domed spire and is surrounded by a stately castle wall with several round towers, each with a concavely domed spire.


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