The Castle of Guimarães was ordered to be built by Dona Mumadona Dias in the 10th century in order to defend its monastery from Muslim and Norman attacks. ( 9th century - 10th century - 11th century - other centuries) As a means of recording the passage of time, the 10th century was that century which lasted from 901 to 1000. ... A Muslim is a believer in or follower of Islam. ... This article talks about the Norman people. ...

Count Dom Henrique (to whom the Portuguese county of Braga had been granted) chose Guimarães to establish his court. The fortress, then over a century old, needed urgent renovation. The nobleman chose to destroy what remained from Mumadona's construction, while extending the area of the castle and adding two entrances. The castle continued to be the official royal residence through much of the 11th and 12th centuries. Braga is a city in northwestern Portugal, in the province of Minho, and capital of Braga district is an important city of Continental Portugal with a population of 112089 in 23 parishes(Urban Area) the Municipality has 62 parishes and 163784 inhabitants (2001 Census). ...

In 1836, a member of the Sociedade Patriótica Vimaranense (Patriotic Society of Guimarães) defended the demolition of the Castle, and suggested the use of its stones to pave the streets of Guimarães, as the fortress had been used as a political prison during the reign of King Michael. However, this was never accepted. 45 years later, on March 19th, 1881, the Diário do Governo (Diary of the Govern) listed the Castle of Guimarães as the most unique historic monument of the whole region of Minho. 1836 was a leap year starting on Friday (see link for calendar). ... 1881 was a common year starting on Saturday (see link for calendar). ... Miño/Minho designates both the river as well as an adjacent Portuguese region Miño/Minho River The river is the longest in Galicia with an extension of 340 km. ...

In 1910 this Castle was declared as a national monument. In 1937, the General Service for National Buildings and Monuments started its great restoration, which concluded with the inauguration of the castle's present symbolic status on June 4th, 1940. 1910 was a common year starting on Saturday (see link for calendar). ... 1937 was a common year starting on Friday (link will take you to calendar). ... 1940 was a leap year starting on Monday (link will take you to calendar). ...