Grow with the flow

Bamburgh Castle perches over a black crag of volcanic rock in Northumberland, England. The castle area and the nearby beaches are covered by the region's distinct sand landforms, the Bamburgh Dunes, seen in the foreground of today's image. The fortress, once a strategic Anglo-Saxon stronghold, evolved over centuries into the imposing structure seen today. The castle played a pivotal role in defending against the Viking invasion in 993. However, the Norsemen destroyed the original fortification, after which significant enhancements were made during the mediaeval period.
© Blackbeck/Getty Images