Costante Tencalla

Costante Tencalla (1593–1646) was a Swiss-Italian architect born at Bissone on Lake Lugano. Trained in Rome under the Baroque architect Carlo Maderno, he followed his uncle Matteo Castelli to the Polish-Lithuanian Commonwealth and helped introduce early Roman Baroque architecture; Castelli became Poland's first royal architect.

After Castelli's death in 1632 he returned to Warsaw as royal architect to King Władysław IV Vasa. For the king he designed Sigismund's Column, erected in Warsaw in 1643–1644 with the sculptor Clemente Molli, and undertook buildings across the kingdom. He died in Warsaw in 1646.