parapets
Low defensive barriers
Parapets are low protective walls along the edge of a roof, bridge, balcony, or fortification.
Originally military—soldiers could shelter behind a parapet while firing over it—the term now mostly describes architectural features that prevent falls or hide rooftop equipment: The building's parapets gave the roofline a distinctive silhouette.
Toothed fortress wall crown
- rampartFortified defensive wall
- crenellationNotched parapet pattern
- merlonSolid parapet section
- embrasureFortified wall opening
castle · fortress · defensive · turret · watchtower · medieval · stronghold · bastion
battlement
Toothed fortress wall crown
- rampartFortified defensive wall
- crenellationNotched parapet pattern
- merlonSolid parapet section
embrasure · castle · fortress · defensive · turret · watchtower · medieval · stronghold · bastion · curtain wall
balustrade
Rail supported by posts
- railingHorizontal safety bar
- ledgeProjecting horizontal surface
- rooftopBuilding's top exterior surface
terrace · balcony · facade · cornice · building · safety barrier · flat roof · roofline · walkway · promenade
span
Distance between endpoints
viaduct · pedestrian · sidewalk · roadway · crossing · girder · deck · causeway · footbridge · barrier
- castleskeep, moat, drawbridge, dungeon, turret
- building partsfacades, wall, door, windows, floor
- castle partsmoat, keep, drawbridge, battlement, tower
- fortificationsfort, fortress, fortresses, citadel, citadels
- fortressfortress, citadel, fort, stronghold, keep
- castle defensemoat, drawbridge, portcullis, arrow slits, turrets