Today's castle of the day obviously has to be Dunnottar castle in Scotland. It offers as close to a perfect natural defense as you are likely to find anywhere. A Pictish fort was recently excavated on a seastack called Dunnicaer which lies just to the north of Dunnotar and many such naturally defended sites may have existed. Very few have been professionally excavated.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!