The stained glass windows of Sagrada Familia are not just a visual spectacle; they represent Gaudí’s innovative approach to Gothic architecture. Unlike traditional cathedrals where the most colorful windows are placed high up, Gaudí reversed this by placing the most transparent windows at the top to flood the space with light. The lower windows, rich in color and design, are positioned where visitors can appreciate them up close.
The stained glass windows were designed by Joan Vila-Grau, a master glazier who worked closely to bring Gaudí’s vision to life. Vila-Grau’s work ensures that each window contributes to the overall harmony of the Basilica while maintaining its unique design.
The interaction between light and the stained glass windows is most dramatic around the solstices. During the winter solstice, the setting sun bathes the interior in warm reds, reflecting the windows' designs onto the opposite vaults. In contrast, during the summer solstice, the morning light filters through cool blues and greens, creating a serene atmosphere on the Nativity façade.
Gaudí departed from traditional Gothic styles by reversing the placement of light and color. In the Sagrada Familia, the upper windows are more transparent, allowing light to flood the nave, while the lower windows are richly colored and designed to be appreciated up close, creating a unique visual experience that encourages reflection and meditation.
The stained glass windows on the Nativity façade are characterized by cool blues and greens, creating a serene and peaceful atmosphere. In contrast, the Passion façade features warm reds and oranges, reflecting the more somber themes associated with this side of the Basilica. This contrast highlights the unity and diversity of the overall design