Sigismund held high regard for the arts and early Baroque architecture; he willingly sponsored foreign masters and engineers who came to Poland at his invitation. He actively took part in the designing of façades and structural elements as well as Eucharistic objects such as chalices, crucifixes, candelabra and even book covers. During a visit to the Lwów Bernardine Church in 1621 he reprimanded the chief planners for making the temple seem disproportionate. Sigismund was a gifted painter and craftsman; only a few of his works survive, among them parts of Saint Adalbert's silver reliquary at the Cathedral in Gniezno. He was also fascinated by alchemy and ancient methods of turning metals into gold; it is said he experimented with the alchemist and philosopher Michael Sendivogius.