Riga Castle (Rīgas pils) is a castle on the banks of River Daugava. The castle was founded in 1330. This structure was thoroughly rebuilt between 1497 and 1515. Upon the castle's seizure by the Swedes, they constructed spacious annexes in 1641. The fortress was continually augmented and reconstructed between the 17th and 19th centuries. Sometime in the 1930s, some renovation work was done by architect Eižens Laube. The Latvian government declared the castle its residence in 1938. Today it is the official residence of the President of Latvia as well as home to several museums.
The castle was built on the basis of a treaty between Riga and the Livonian Order - in 13th century Rigans had rebelled against the Order and demolished its original castle in center of the town. Due to constant fights with Rigans the Order chose to rather build a new castle behind borders of the town, than rebuild the original castle. The site occupied by Convent of the Saint Spirit - a hospital and shelter for the poor - was chosen and the convent moved to location of the original castle. The castle served as residence of Master of the Livonian Order, but due to continuous conflicts with Rigans the residence was moved to Castle of Cēsis sometime before the castle was destroyed by Rigans in 1484. The Rigans eventually lost the fight and were forced to rebuild the castle - the restoration was finished in 1515. After the Union of Wilno order cased to exist in 1561 the Castle became Lithuanian and in 1569 - Polish-Lithuanian stronghold. In 1621. Riga came under Swedish rule and the Castle was used to house Swedish administration.
After the city came under Russian rule in early 18th century, the castle housed administration and courts of Riga Governorate and served as residence of Governors General. In 1922 the castle became residence of the President of Latvia. After Soviet occupation the castle housed Council of People Commissars of Latvian SSR in 1940-1941. In 1941 Young Pioneer organization of the Soviet Union moved into northern part of the castle, which therefore became known as the Pioneer Castle. Several museums are housed in the southern part of the castle. After Independence of Latvia was restored the northern part of the Castle again became the residence of President of Latvia.References:
Ängsö Castle was first named as "Engsev" in a royal charter by king Canute I of Sweden (r. 1167-1196), in which he stated that he had inherited the property after his father Eric IX of Sweden. Until 1272, it was owned by the Riseberga Abbey, and then taken over by Gregers Birgersson.
From 1475 until 1710, it was owned by the Sparre family. The current castle was built as a fortress by riksråd Bengt Fadersson Sparre in the 1480s. In 1522, Ängsö Castle was taken after a siege by king Gustav Vasa, since its owner, Fadersson's son Knut Bengtsson, sided with Christian II of Denmark. However, in 1538 it was given by the king to Bengtsson's daughter Hillevi Knutsdotter, who was married to Arvid Trolle.
In 1710, the castle was taken over by Carl Piper and Christina Piper. Ängsö Castle was owned by the Piper family from 1710 until 1971, and is now owned by the Westmanna foundation. The castle building itself was made into a museum in 1959 and was made a listed building in 1965. It is currently opened to visitors during the summers.
The castle is a cubical building in four stores made by stone and bricks. The lower parts is preserved from the middle ages. It was redecorated and expanded in the 1630s. The 4th storey as well as the roof is from the expansion of Carl Hårleman from 1740-41. It gained its current appearance in the 1740s.