Örebro Castle is a medieval castle fortification in Örebro, Nerike, Sweden. A castle is a defensive structure seen as one of the main symbols of the Middle Ages. Fortifications are Military Constructions and Buildings designed for defense in Warfare Humans have constructed defensive works for Örebro is a city in Närke in central Sweden. Örebro is the seat of Örebro Municipality and the capital of Örebro County. is a traditional Swedish province or landskap in middle Sweden. "Sverige" redirects here For other uses see Sweden (disambiguation and Sverige (disambiguation. It was expanded during the reign of the royal family Vasa (House of Vasa) and finally rebuilt about 1900. A royal family is the extended family of a monarch. Generally the head of a royal family is a king or queen regnant The House of Vasa ( Swedish: Vasaätten, Polish: Waza) was the Royal House of Sweden The castle lies beautifully on an island in river Svartån. Svartån (English black stream) is a name given to a considerable number of Swedish Rivers and Streams The longest in Västmanland