Architecture of Hertfordshire See Also 1910Architecture of HertfordshireLetchworthR.F. Johnston Random Building 1875 – Congregational Church, Little Hadham, Hertfordshire 1910 – Offices, Letchworth, Hertfordshire Home / Buildings / Architecture of England / Architecture of East England / Architecture of Hertfordshire / 1910 – Offices, Letchworth, Hertfordshire Architect: R.F. Johnston TweetEmail Latest Additions 1862 – House of Retreat, Inchicore, Dublin 1874 – Blessingbourne House, Fivemiletown, Co. Tyrone 1789 – Unbuilt Design for a Villa, Cork 1790s – Design for Coole House, Gort, Co. Galway 1790 – Design for Casino at Lough Cutra, Gort, Co. Galway