The Tower of London, (1078). William the Conqueror built the central White Tower
The Civic Hallin Massa
MarittimaItaly
Medieval Castle
Battlements (or crenellation) are the parapets of towers or walls with indentations or openings (embrasures or crenelles) alternating with solid projections. Merlons are the saw-tooth effect or the "teeth" of the battlements