This town has had a tradition of glassmaking since ancient times. The siliceous sand from the quarries near Castril, which have been reopened after more than 30 years without use, was used since the Middle Ages for the manual production of pieces of glass with a characteristic turquoise-green hue that made Castril glass a highly prized and unique material in the world. In fact, pieces of the typical Castilian jug can be seen in the world's leading museums, as the town had important master glassmakers.
The City Council began work to create a Municipal training centre for artistic glass blowing also known as Castril Glass Centre, to recover a traditional craft of the area and provide a way to revive the economy and prevent depopulation, in collaboration with the master glassmaker Diego Rodriguez Blanco, technician Royal Glass Factory of La Granja, is conducting a training programme to train new artisans.
The Municipal Training Centre for Artistic Glass Blowing has a fully equipped room with a melting furnace for working glass and holding workshops, a room for theoretical training and another for the exhibition of the pieces, which is intended to serve as a tourist attraction for the municipality of Castril in Andalusia.