This paper is in two parts. First, John Schofield, the Cathedral Archaeologist for St Paul’s Cathedral, describes both recent conventional and digital attempts to reconstruct the medieval St Paul’s Cathedral, which preceded the present building by Christopher Wren. Second, John Wall, of North Carolina State University, describes a newly-completed project to recreate the public preaching place of Paul’s Cross, which lay to the north-east of the cathedral, in the early 17th century, and to provide the experience of listening to a sermon by John Donne, from various locations near the Cross. Schofield provided the information for reconstruction of the cathedral and St Paul’s Churchyard. Aspects of the experience will be demonstrated. We report on issues raised by these research ventures, such as authenticity, attempts to make models less than pristine, and how the work itself creates new questions for archaeologists, historians, literature professors and software developers to address.