Chiesa di Santa Maria Foris Portam

This guide to the Chiesa di Santa Maria Foris Portam in Lucca follows the Baroque painter Guercino, nicknamed for the squint he lived with from infancy, and the two canvases he sent to this nave in the 1640s. It lingers on his 1642 Saint Lucy, patron of eyesight, and the legend behind her image, then on the Assumption that joined it a year later. Look down as well as up: a sundial cut into the floor tracks a beam of sunlight the way a camera obscura would.