The Fortress of Brod was constructed between 1715-1780 by the Archduchy of Austria to create a defense against the Ottoman Empire. The city of Slavonski Brod was an important strategic and traffic center controlling the border crossing towards Turkey and connecting main commercial trails at the time. The regular star-like form of the fortress was determined by the flat-country. It was built of rammed earth, bricks, wood and partially stone, and designed for the accommodation of 4,000 soldiers, mostly infantry and 150 cannons.
The Fortress of Brod was constructed according to the Vauban system. It is basically of a rectangular form, while the system of defense channels provides its star-like layout. It consisted of three defense zones: internal, external and southern, and it was protected by two moat areas, water-fed from the nearby stream.
References:The Royal Palace was built in the first half of the 19th century as the Norwegian residence of King Charles III, who also reigned as king of Sweden and otherwise resided there, and is the official residence of the present Norwegian monarch. The crown prince resides at Skaugum in Asker west of Oslo. The palace has 173 rooms.
Until the completion of the Royal Palace, Norwegian royalty resided in Paleet, the magnificent town house in Christiania that the wealthy merchant Bernt Anker bequeathed to the State in 1805 to be used as a royal residence. During the last years of the union with Denmark it was used by the viceroys of Norway, and in 1814 by the first king of independent Norway, Christian Frederick.