This majestic Gothic building stands out for its impressive collection of stained glass windows, creating a luminous spectacle that captivates visitors.

From the 13th century, a splendor of the purest Gothic style, inspired by French cathedrals, making it an exception in the national territory for its great beauty. Known as the Pulchra Leonina, it is the most colorful, with more than 1,800 square meters of stained glass, the best European collection of medieval stained glass, making it a true spectacle of light.