He was a phenomenal and intellectual architect. Jan Blažej Santini Aichel (usually known as Santini) lived in the 17th and early 18th centuries. Born to an Italian father and Czech mother, he left a legacy of great churches and sacred buildings in Prague and throughout the Czech Republic.
https://cs.wikipedia.org/wiki/Jan_Bla%C5%BEej_Santini-Aichel