Illustration
The donjon or keep of Dover Castle, Kent, England. The castle was first built by William the Conqueror in the 11th century CE and it was then extensively rebuilt with new walls and a keep added by Henry II (r. 1154-1189 CE).
The donjon or keep of Dover Castle, Kent, England. The castle was first built by William the Conqueror in the 11th century CE and it was then extensively rebuilt with new walls and a keep added by Henry II (r. 1154-1189 CE).