The Port Wall in Chepstow is a late thirteenth century stone wall, which was constructed for the twin purposes of defence and tax collection by permitting users of the town's market only one point of access through the wall at the Town Gate. The wall originally formed a semi-circle extending for some 1,100 metres, roughly southwards from Chepstow Castle to the River Wye. It enclosed an area of 53 hectares, including the entire town and port as it existed at that time. Substantial sections of the wall remain intact.
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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.