Have stormtroopers taken over this 12th-century castle? 🤔 Our Geospatial Survey Team use this wearable laser scanner to produce 3D digital models and maps of historic sites such as St Briavels Castle in Gloucestershire. Laser scanners allow us to record information about the condition of buildings like these, which will help with future conservation work. The medieval castle is managed by English Heritage, and is now used as a youth hostel by YHA England and Wales. | Historic England

This is Epic History TV's guide to building the perfect castle, based on the development of European medieval castles over 400 years of history. We trace the origins of the castle in the feudal system that emerged in France c.900 CE, and look at the early motte-and-bailey castle, used by the Normans to subjugate England and Wales in the 11th century. We then look at how castle's became stronger and more sophisticated, with the addition of stone curtain walls, massive keeps, towers (square, round