The original church design was never completed. Only the apse, choir (with aisles) and transepts were completed.[4]
The church was located in the valley between the Old Town and Calton Hill, but was systematically dismantled in 1848 due to the construction of Waverley Station on its site. Although its stones were numbered in anticipation of rebuilding and were stored in a yard on Calton Hill, by 1872, when a replacement church was built on the newly formed Jeffrey Street, only a third were left which were used to construct a version of the choir and apse which was the hall of the new church.
^Rachel M. Delman, 'Mary of Guelders and the Architecture of Queenship in Fifteenth-Century Scotland', Scottish Historical Review, 102:2 (2023), pp. 211–231. doi:10.3366/shr.2023.0611
^Duncan Macmillan, Scottish Art, 1460–1990 (Mainstream, 1990), p. 18.