This chapter focuses on the Irish sweathouse with its mysterious uses and past practices. I contrast the Fulacht Fiadh type ritual space with the sweathouses found in rural areas and elaborate on how herbs and substances for altered states of consciousness were used. Most centrally, I comment on the role of women in Irish sweat houses and the collective imaginary with the Sheela-na-gig figure as a key figure, albeit with historically changing roles and meanings. The section compares the pagan or pre-Christian Sheelas with the Celtic and Christian interpretations of the powerful figure. Precursors and similar figures from Old Europe are analyzed to tease out the elements that appeal to a feminist spirituality and sensibility. I focus also on the Northern connection which suggests that the symbol system of the Goddess Civilization may well have reached higher North than even Gimbutas suspected. The chapter that follows represents a more detailed comparison of the Delaware Big House and Irish Sweat Houses in terms of the shared ritual and symbolic elements presented in the previous chapters.