1. Portraits of the temple of Diana, in which was graven, or by any other art represented, that famous structure, which was afterwards burnt by Erostratus: or:
2. they were medals in which their idol Diana was expressed according to her image, spoken of, Act_19:35. And they are called here, temples, or shrines, because they did resemble and represent that shrine or temple.
And these the superstitious people carried home to their houses and friends; not only to evidence what a pilgrimage they had performed, but to incite the more their devotions towards this idol.