Gaudi

When the Pope visited Spain, he held mass at the Holy Family cathedral which was designed by Gaudi.

Nat Geo magazine has a story on it.

Adrian Bejan says the facades of the Sagrada Família are based on the golden ratio, the geometric proportion "behind all aesthetically pleasing art." The distinguished professor of mechanical engineering at Duke University, whose "constructal law" states that design in nature is a universal phenomenon of physics, calls Gaudí a forebear and a "tightrope walker on the line bridging art and science. He understood that nature is constructed by laws of mathematics. What is strongest is inherently lightest and most efficient, and therefore most beautiful."