Why Castles Had Spiral Staircases: Defense, Space, Observation, Escape

Spiral staircases in medieval castles served multiple practical purposes:

• Defense: Designed to give defenders (usually right-handed) a sword-swing advantage over attackers ascending.
• Space-saving: Compact footprint ideal for cramped castle towers.
• Observation: Tower staircases allowed sentries to scan for approaching enemies.
• Escape: Some hidden spiral stairs provided secret evacuation routes.

These clever designs combined military utility with architectural efficiency.