The regional museum of Kainuu is devoted to the history and culture of the province of Kainuu. The permanent exhibition showcases, for instance, the peasant culture, tar production and military history of the region from the prehistoric age to the 20th century. The museum has also 3-5 contemporary exhibitions each year. Collection is strongly related to the history of the Kajaani castle.
The Peace Palace (Vredespaleis) is an administrative building and often called the seat of international law because it houses the International Court of Justice (which is the principal judicial body of the United Nations), the Permanent Court of Arbitration, the Hague Academy of International Law, and the extensive Peace Palace Library. In addition to hosting these institutions, the Palace is also a regular venue for special events in international policy and law. The Palace officially opened on 28 August 1913, and was originally built to provide a symbolic home for the Permanent Court of Arbitration, a court created to end war which was created by treaty at the 1899 Hague Peace Conference.