torre de menagem

Also known as great tower, donjon, castle keep, tribute tower

thumb|upright=1.4|The Norman architecture|Norman () keep of [[Rochester Castle, England (rear). The shorter rectangular tower attached to the keep is its forebuilding, and the curtain wall is in the foreground.]] A keep is a type of fortified tower built within castles during the Middle Ages by European nobility. Scholars have debated the scope of the word keep, but usually consider it to refer to large towers in castles that were fortified residences, used as a refuge of last resort should the rest of the castle fall to an adversary. The first keeps were made of timber and formed a key part o