when were the first castles built in europe
Castle A European innovation, castles originated in the 9th and 10th centuries, after the fall of the Carolingian Empire resulted in its territory being divided among individual lords and princes. These nobles built castles to control the area immediately surrounding them, and the castles were both offensive and defensive structures; they provided a base from which raids could be launched as well as protection from enemies. Although their military origins are often emphasised in castle studies, the structures also served as centres of administration and symbols of power. Urban castles were used to control the local populace and important travel routes, and rural castles were often situated near features that were integral to life in the community, such as mills, fertile land, or a water source.
Elmina Castle Elmina Castle was erected by the Portuguese in 1482 as SÃ£o Jorge da Mina (St. George of the Mine) Castle, also known simply as Mina or Feitoria da Mina) in present-day Elmina, Ghana (formerly the Gold Coast). It was the first trading post built on the Gulf of Guinea, so is the oldest European building in existence south of the Sahara. First established as a trade settlement, the castle later became one of the most important stops on the route of the Atlantic slave trade. The Dutch seized the fort from the Portuguese in 1637, and took over all the Portuguese Gold Coast in 1642. The slave trade continued under the Dutch until 1814; in 1872, the Dutch Gold Coast, including the fort, became a possession of the British Empire.