No plaque marks the spot in any obvious way, no ruin survives above ground, and the address, 41 Fishamble Street, looks much like any other on a street better known today for its association with the first performance of Handel's Messiah. Yet this was once the site of St. Olave's Parish Church, a building dedicated to a Scandinavian king and reflecting the deep imprint that Dublin's Viking and Hiberno-Norse communities left on the medieval city's religious geography.

The church took its name from St. Olaf Haraldsson, King of Norway, who died in 1030 and was canonised shortly afterwards. His cult spread rapidly across the Norse world and into areas of Viking settlement, which is why churches dedicated to him appear in cities like London, York, and Dublin, all places shaped by Scandinavian presence. The earliest written record of the parish of St. Olave's in Dublin dates to around 1225, appearing in the Register of the Hospital of St. John the Baptist outside the Newgate. At some point the church was granted to St. Augustine's Abbey in Bristol, England, a reminder of how ecclesiastical property in medieval Ireland could fall under the jurisdiction of institutions based across the Irish Sea. The adjoining lot at number 40 Fishamble Street has been identified as the site of the Priest's House, suggesting the parish once occupied a modest but distinct cluster of buildings on this stretch of the street. The church was demolished around 1650, and when burials were uncovered near the former churchyard in 1939, they offered one of the few tangible confirmations that a religious community had once gathered here.

There is nothing to see at the site in the conventional sense, which is precisely what makes it worth thinking about. Fishamble Street itself is one of the oldest streets in Dublin, running down towards the Liffey in the area once associated with the Viking town, and walking its length with that history in mind changes how the street feels underfoot. The site at number 41 sits quietly among commercial buildings, and a visitor who knows what to look for, or rather what to look for in the absence of visible evidence, can stand roughly where a medieval congregation once gathered to venerate a Norwegian king. The 1939 discovery of burials was documented by Clarke and later by De Courcy, and anyone interested in following up the archaeology will find references in the scholarly literature compiled by researchers including Geraldine Stout.