Fritzøehus is the largest privately owned estate in Norway. The estate has traditionally been associated with various members of the Treschow family. Fritzøehus was built for Michael Treschow (1814-1901) during the years 1863–1865. Michael Treschow was one of the country's most important industrialists in the mid-19th century. He owned Fritzøe Jernverk, an ironworks together with sawmills and sizable forest properties in Larvik.
Fritzøehus was designed in Renaissance Revival architecture by architect Jacob Wilhelm Nordan (1824–1892). The manor house was expanded in 1885–1889 and 1897–1898. The total floor area includes 75 rooms plus 21 basement rooms, making it the largest private residence in Norway.
Fritzøehus is located in Fritzøehus park, which today is a designated conservation area for the purpose of preserving the large beech forests and the distinctive landscape. In the 6.9 km2 park there are also walnut, fir, and spruce trees. The park was built in the English style in the 1860s. In the courtyard stands a water fountain and a sculpture of a bear by sculptor Anne Grimdalen (1899–1961). The park includes a collection of fallow deer and mouflon from the Mediterranean.
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.