Diego, the muralist, was hugely famous and admired in the 1920's and 1930's. His wife, Frida, was little recognized at that point. She became hugely popular as an artist decades later. The movie of her life story, Frida, starred Mexican actress Salma Hayek.
This unusual setting is an ofrendas, an altar honoring the dead during the Mexican festival called Dia de Los Muertos.