The cult of Antinous was never as large as those of well established deities such as Zeus, Dionysus, Demeter, or Asclepios, or even as large as those of cults which were growing in popularity at that time, such as Isis or Serapis, and was also smaller than the official imperial cult of Hadrian himself. However, it spread rapidly throughout the Empire, with traces of the cult having been found in at least 70 cities. The cult was most popular in Egypt, Greece, Asia Minor, and the North African coast, but a large community of worshippers also existed in Italy, Spain, and northwestern Europe. Artifacts in honor of Antinous have been found in an area that spans from Britain to the Danube.