Related Clues:

• Fortification
• Protective wall
• Defensive wall
• Castle protector
• Defensive structure
• Barricade
• Barricade in ''The Star-Spangled Banner''
• Castle wall
• Bulwark
• "You can take the stairs or the ___, ___"
• Fort feature
• Castle fortification
• Protective barrier
• Elevated fortification
• Military protection