Gåseborg was an magnificient ancient hill fort built in the Iron Age, about 1500 years ago. It was built of stone without any masonry. According the archaeological excavations the fort has been also a temporary residence. For example remains of golden artefacts have been found from the site.
References:These are great photos, thanks for uploading. I grew up in Viksjo and used to play on this mountaintop. Would love to visit today and take some photos, but I live in the US now. Thanks!
Kakesbeck is one of the largest medieval fortifications in Münsterland and the oldest castle in Lüdinghausen. The imposingly grown complex originated in 1120 as a motte, a small hilltop tower castle. After numerous changes of ownership, the castle was extended onto two islands, but it was not until the 14th century that it underwent significant alterations and extensions under the von Oer family. The estate experienced its heyday in the middle of the 18th century, when it covered an area of almost one square kilometre and consisted of five further outer castles in addition to the core castle, which were secured by ramparts and moats.
The well-maintained condition of the castle today is thanks to the late Wilfried Grewing, the former lord of the castle. The foundation named after him has been particularly committed to preserving the property since 2020.