The local craft tradition is the theme on the first floor, where visitors can see a working loom and a shoemaker's workshop. The local archive and library are also located here. On the upper floor, the history of watchmaking in Diedenshausen since 1770 can be traced. In addition, the local history association puts on three to four changing exhibitions on craft, cultural and historical themes every year.
The memorial commemorating a great son of the village is outstanding:
Johannes Althusius (1562-1638), who came from a farming family,
was a constitutional lawyer. With his main work, the "Politica", he is regarded as the most important
political theorist of Calvinism and is regarded as the greatest federalist
theorist of the 16th and 17th centuries. The history of the village and the development of the townscape are so complex that the local history association also offers guided tours focusing on specific areas of interest.