Dublin on Wikipedia.

Blessed Sacrament Chapel (the building between the flags) on Bachelors Walk. Interior view. Both © John Balaam (2007). Link.

Christ Church Cathedral (C.I.), properly The Cathedral Church of the Holy Trinity. Another view. Both © Aidan Thomson. An old postcard view, from Reg Dosell's Collection. Link.

Church of Mary Immaculate, Refuge of Sinners (R.C.) on Lower Rathmines Road, Rathmines. Interior view, and the impressive dome. Mike advises that Rathmines parish was created out of St. Nicholas Without parish in 1823. The first church was consecrated in 1830, though the present church dates from 1856. All © Hilary Tulloch (taken on behalf of Mike Berrell).

Sacred Heart (R.C.) at Donnybrook. © Aidan Thomson.

St. Bartholomew (C.I.) at Ballsbridge. © Aidan Thomson.

St. Joseph (R.C.) at Terenure. © Aidan Thomson.

St. Michan (CoI). Interior view - note the pulpit behind the congregation. Both © John Balaam (2008). Link.

St. Patrick's Cathedral (C.I.), from an old postcard, Bulman Collection. A modern view. © Aidan Thomson. Link.

St. Peter (R.C.) at Phibsborough. © Aidan Thomson.

St. Teresa (Carmelite, R.C.), on Clarendon Street. Interior view. Both © John Balaam (2010). Link.

Unitarian Church (1863) on St. Stephen's Green. © unitarian.co.uk. This, and many other old engravings on this website, are reproduced from the downloadable books on the Unitarian Church Headquarters website here. The books are Pictures of Unitarian Churches by Emily Sharpe (1901) and the 1914 edition of Nonconformist Church Architecture by Ronald P. Jones M.A, (Oxon), and the images are reproduced by kind permission of James Barry of Unitarian Church Headquarters. My appreciation also to Mike Berrell for his efforts in this regard.