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
Glacis
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A glacis in military engineering is an artificial slope as part of a medieval castle or in early modern fortresses. They may be constructed of earth as a temporary structure or of stone in more perman
Middle Bronze Age glacis in 'En Esur, Israel
Krak des Chevaliers, a medieval Crusader castle in Syria. The south face of the inner ward with its steep glacis.
Iron Age ramparts and ditches in Maiden Castle.
Glacis, Mont-Louis Fortress, Pyrénées-Orientales, France