Cathedrals are liminal spaces inhabiting a threshold between the sacred and secular. That sacred/secular tension, along with the loose nature of community in the cathedral context, impacts clear expression, perception and enactment of institutional ministry and mission, particularly by engaged laity. This paper explores the ministry and mission of Christ Church Cathedral Dublin from a range of perspectives. The intended emphasises in ministry and mission were identified by an evaluation of cathedral policy documents. The experienced emphasises in ministry and mission were identified by in-depth interviews among senior leaders, clergy, canons, staff, volunteers, and members of the congregation. An evaluation tool was employed to map the inductively coded themes emergent from the interview data onto the five Marks of Mission of the Anglican Communion both to identify gaps between intended and experienced mission and to identify the various aspects of Anglican expression prioritised and those limited in the life of the Cathedral. This paper concludes that the excellence of cathedral worship provides opportunities for liminal spiritual experiences for engaged laity but does not necessarily enable the communitas they then seek.