The Shrine of Venus Cloacina (Sacellum Cloacinae or Sacrum Cloacina) — the "Shrine of Venus of the Sewer" — was a small sanctuary on the Roman Forum, honoring the divinity of the Cloaca Maxima, the spirit of the "Great Drain" or Sewer of Rome. Cloacina, the Etruscan goddess associated with the entrance to the sewer system, was later identified with the Roman goddess Venus for unknown reasons.