Old Aker Church (Gamle Aker kirke) is Oslo's oldest remaining building and the only remaining church from the Middle Ages. It is assumed that it was built around the year 1150. It is a stone church, built as a three-naved Roman-style basilica.
The church has been pillaged and ravaged by fire several times. The oldest part of the surrounding churchyard dates back to the 12th century. The church has a baroque pulpit and baptismal font from 1715. The tower was built in 1861.
The church was built over an old silver mine, Akersberg which was in use since the early Viking age. The mines are mentioned in the 1170 Historia Norvegiae. The mines must have been the inspiration for a number of stories about the church having hidden silver treasures and even dungeons with dragons.
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.