Architectural Canopy – Austrian – The Metropolitan Museum of Art https://www.metmuseum.org/art/collection/search/469905
From the Public Life of Christ window, choir of the castle chapel (the Schlosskapelle) at Ebreichsdorf, south of Vienna.; Roy Grosvenor Thomas 1886–1952, New York (by 1923) ; George A. Douglass, Sr., Greenwich, CT
These backgrounds link the individual scenes in a unified composition.