Sevillanos hang skirts of fabric over their balconies during Semana Santa bearing the sign of Seville The Seville  Ayuntamiento (city hall) facade is the best example of Plateresque architecture   (silversmith) in Andalusia.
The ornate, baroque designs were  termed  Plateresque because they resemble the detailed work of silversmiths.
The NODO symbol over and old entrance to the City Hall.
The NODO symbol is even included on every water main cover.
Utility covers bear the symbol.

"She has not deserted me" were the words reputedly uttered by Alfonso X (the Wise), after Seville remained loyal to him in the course of a dispute with his son Sancho during the 13^th century Reconquest of Spain. The war between the Moors and the Christians, which started in the north, arrived in Andalusia with a decided Christian victory at Las Nevas de Tolosa in 1212. Seville and Cordoba were the last to fall under Christian rule. By the late 13^th century only the Nasrid kingdom of Granada remained under Moorish control. This was when the Nasrid princes constructed the Alhambra, their "Paradise on Earth"—and their ultimate expression of aesthetic refinement and imperial power, belying an image of imminent decline. Meanwhile, Christian monarchs like Alfonso X and Pedro I enlisted Moorish craftsmen to build churches and palaces in the reconquered territories, renaming the people Mudejar, literally meaning "those permitted to stay". In 1492 Granada finally fell to Fernando and Isabel of Aragon and Castilla, commonly known as the Catholic Monarchs.

Seville