Parapet
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A parapet is a barrier that is an upward extension of a wall at the edge of a roof, terrace, balcony, walkway or other structure. The word derives from the Italian parapetto. Where extending above a r
The crenellated parapet on a bastion of Kyrenia Castle, Cyprus
A parapet surrounds a New York City rooftop, shielding the HVAC and water tank and supporting the glass guardrails.
Elaborate parapets flank the roof of King's College Chapel, Cambridge.
A modern parapet with integrated lighting functions as a guard rail along the BP Pedestrian Bridge in Chicago
Embrasure
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An embrasure is the opening in a battlement between two raised solid portions. Alternatively, an embrasure can be a space hollowed out throughout the thickness of a wall by the establishment of a bay.
Embrasure with three angles of fire, Keoti Fort, India
A loophole or inverted keyhole embrasure, allowing both arrow fire (through the arrowslit at the top) and small cannon fire through the circular openings, Fort-la-Latte, France
Embrasure of Chinese wall
Embrasures at Mdina, Malta