Claude Monet’s Beach at Honfleur is pretty mathematically stellar, to be honest.
The diagonal cut of this rocky terrain splits the composition into two pieces; the stones and sand on the right, with the boats and and water on the left. Add the clouds and the cliffs, and my goodness: Monet does a pretty stellar job drawing the eye into the middle of the canvas.
Turns out though, Monet didn’t complete this work en plein air (“outdoors,” duh) like it seems. Photos of his studio from back then suggest that he worked on it once he returned home from the beach.
Uh, yes! I don’t think I upload a single selfie without at least a Valencia filter these days.