The church and monastery of the Augustinian hermits in Erfurt was built around 1300. Martin Luther, the famous Augustinian monk, was admitted to the monastery on 17 July 1505. The Augustinian Monastery pays tribute to Martin Luther with a new exhibition. The Lutherzelle (Luther's cell) can be visited as part of the exhibition. Since 1988 the monastery has been used as an ecumenical conference centre and a memorial to Luther.
References: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.