 The preserved Pompeian temple is actually the second structure; the original building built during the reign of Augustus was damaged in an earlier earthquake, in 62 AD.At the time of the 79 AD eruption of Vesuvius, the Iseum was the only temple to have been completely re-built; even the Capitolium had not been.Although the Iseum was wedged into a small and narrow space, it received significant foot traffic from theater-goers at the Large Theater, businessmen in the Triangular Forum, and others along the Stabian Gate.