Beaumaris, the last of Edward I’s defense strongholds situated along the North Welsh coast, was a marvel of its time. It was built with an ingenious “walls within walls” style of architecture that was the 13th century equivalent of a spacecraft landing on Anglesey. In 1403, the castle was taken by Welsh forces during the Owain Glyndŵr rebellion, but the royal army recaptured it two years after. During the English Civil War in 1642, the castle was held by royalists, though it was taken by Parliament in 1646. It was part of a royalist rebellion in 1648, yet it was not destroyed and was garrisoned by Parliament. It was ruined by 1660, and later became a part of a stately home and park in the 19th century. Now, the ruins are managed by Cadw as a tourist site.