The journey towards spiritual refinement is skillfully represented in this Hall through the metaphor of the alchemist, who longs to transform iron into gold. The various stages of this process are depicted in eight glass windows, embedded in as many wall niches, that show the different ages of human beings, each connected to a specific metal. From the iron of early childhood to the gold of old age, symbolizing spiritual nobility.
Six large-size human figures portrayed in the floor mosaic represent the limitations to overcome, while on the walls feminine and masculine figures are depicted in the act of freeing themselves and reaching higher spiritual levels.
Higher up, near the ceiling, more human figures of all ages represent the spiritual sphere and the dimension beyond life. The beautiful, unique terracotta ceiling is adorned with silver and gold leaf. Dancers and knights are depicted while they are protecting the spiritual fire through art, beauty, knowledge and discipline.
Four ceramic columns, finely decorated with plant motifs, are placed in front of the four Tiffany glass portals that are dedicated to the elements.