In "A History of Spain," Arturo Pérez-Reverte highlights the Roman conquest and the resistance faced from various cities, notably Calahorra. The city stood firm against Roman forces, symbolizing a heroic struggle for independence. This resilience is encapsulated in the phrase, "Calahorra, which does not resist Rome is Zorra," indicating that without resistance, a city's identity is diminished.

This saying illustrates the importance of standing against domination and preserving cultural integrity. Calahorra's legacy serves as a testament to the strength against invaders, resonating through history as a significant example of defiance and the spirit of resistance in the face of overwhelming odds.