Castelo de Guimarães was built under the orders of Mumadona Dias in the 10th century to defend the monastery from attacks by Moors and Norsemen.
The castle, which to me looked more like a fort, was partly close because of some renovations.
Not all the areas where open and a tour guide was needed. They were offering a virtual tour as well, which I took, it showed the reenactment of a battle against the Moors. It was interesting. 
church of São Miguel do Castelo
Church of São Miguel do Castelo is a medieval church. he church was first referenced in 1216.
It lack of decoration, with compact walls, low lighting and simple floor plan.
Palace of the Dukes of Braganza
The palace was built in the first quarter of the 15th century. Its is classified as a National Monument and in 1910 it became the the official residence for the President when the region is visit.
The palace is structured around a central rectangular courtyard. The rooms are located around this yard. The chapel is opposite the main entrance.
The building is constructed in granite, masonry block. It has Romanesque and gothic influences.
