It’s Ferragosto in Italy, the run-up to Labor Day in the U.S., and late summer everywhere else. As the sunshine season winds down, the Air Mail Editor at Large shares not-to-be-missed art stop-offs, from the Greek Islands to the French countryside.

First stop: Delos

On this Greek island, part of the the Cyclades, the British sculptor Antony Gormley has created an installation called “Sight,” in which 29 iron “bodyforms”—some of them cube-like structures, others more classically human—stand here and there among the delicate archaeological remains of ancient walls and columns. Context, in Gormley’s work, is everything, and one cannot help wondering, while exploring the installation, why each piece is placed precisely as it is. Climbing to the final work, positioned at the pinnacle of the island, brings a profound sense of accomplishment. Delos is the mythological birthplace of the sun god, Apollo—whom the poet Percy Bysshe Shelley referred to as the eye of the universe—and from up there, one’s “sight” is surely Apollonian.