Every time I see an spectacular modern home like this House in Sao Paulo—with huge glass panes and ultra-tall ceilings—I always ask myself the same question: How do they keep it clean? Do they hire climbers or call Spider-Man?

Our own Adrian Covert has the obvious answer: "Anyone who has a house this nice can probably afford an industrial-grade cleaning crew to come in and handle that." Elementary, dear Covert, elementary. [Archdaily]