The site of Heraea is fixed by its distance from the mouth of the Ladon, which, according to Pausanias, was 15 stadia. The same writer says that the greater part of the city lay upon a gently sloping hill, and the remainder upon the banks of the Alpheius. The remains of Heraea are visible on a hill west of the village of Agios Ioannis (St. John), bounded on either side by a ravine, and sloping down towards the river. These ruins extend along the summit of the hill and the slope towards the river; but they are inconsiderable, and have for the most part been cleared away in consequence of the fertility of the land. The wine of Heraea was celebrated in antiquity, and was said to make women fruitful.