The Wall is the Wall: Why Fortresses Fail

 …and there he corrected many abuses and was the first to construct a wall, eighty miles in length, which was to separate the barbarians from the Romans.

Unleashing the Superhero Within: Fear as Your Key to Boundless Potential, by Julian Oliveira

If a wall can be breached, why didn't castles in the medieval age build more walls? - Quora

Backs against the Wall, AD 117-113

A Mighty Fortress Charcoal Art Project

The Development of Cannons and Fortresses

5: A Village before a Fortress

squinches: Further reflections on a Methodological Problem: The argument that Cyclopean walls were built to display status or power

The Wall is the Wall: Why Fortresses Fail

They are my favorite things. I thought Machu Picchu was the only one b