Why were medieval walls white?
Why were medieval walls white? Castle walls could be plastered and whitewashed to protect the walls and mortar. The White Tower in the Tower of London is named for such a reason. Whether a castle would be 'white' would really depend on the plaster used and I'd expect to vary by custom from county to country and from age to age.
Why did castles have high walls?
If attackers managed to break through this outer ring of defense, castle defenders could retreat behind high inner walls. Corner towers stood out from the walls, giving defenders a better perspective on enemy movements. Windows were rare; instead, slits called loopholes were built for archers.
How deep were medieval walls?
The height of walls varied widely by castle, but were often 2.5–6 m (8.2–19.7 ft) thick. They were usually topped with crenellation or parapets that offered protection to defenders.