3. Church of Satan franchises are called grottoes
Painting your house black and inviting the press to film and photograph you performing blasphemous rituals there isn’t a recipe for privacy. LaVey’s persistent self-promotion made it inconvenient to conduct Satanic business at the Black House, which was also far too small to accommodate new members wishing to attend rituals. LaVey thus adopted the ancient system of the Christian Church, doubtless with a wry smile, which saw lesser religious sites, called grottoes, set up in cities across the US, much like the system of cathedral and church. With truly Satanic hypocrisy, LaVey instructed these grottoes to keep a low profile.