Akershus fortress

Akershus Castle is a medieval castle in the Norwegian capital of Oslo, built to protect and serve as a royal residence for the city. Since the Middle Ages, the fortress was the eponymous and main fief center, and later the main district of Akershus, which was originally one of the four main regions of Norway and included most of Eastern Norway. The fortress was located in the main district of Akershus until 1919 and within the smaller subdivision of Akershus until 1842. Getting there It is a 15-20 minute walk from Oslo train station. Or take bus number 12#Travel abroad