This one leaves nothing at all. Somewhere beneath the pavement of Exchange Street Lower in Dublin's south city lies the approximate location of a medieval privy, a communal latrine of the kind that served the dense, busy populations of urban medieval life. There is no plaque, no outline set into the ground, no interpretive panel. The site exists, essentially, as a note on a map.

The source for that note is the Friends of Medieval Dublin Map, published in 1978, which catalogued known and approximate locations of medieval features across the city. Grid reference O10 marks the spot on Exchange Street Lower, identified by Geraldine Stout, who compiled the record uploaded in November 2012. Medieval privies, or garderobes as they were sometimes called in more domestic settings, were practical infrastructure, often built over rivers, channels, or pits, and Dublin's medieval street network was well supplied with watercourses that served exactly this purpose. The Poddle, the smaller river that once ran openly through this part of the city before being culverted, would have made the area practical for such arrangements. The Exchange Street Lower location sits close to the old heart of Viking and then Anglo-Norman Dublin, where streets were narrow and plots tightly packed, and sanitation was managed as collectively and pragmatically as space allowed.

There is, in the most literal sense, nothing to see here. Exchange Street Lower is a short, quiet road running near the old city walls, within easy walking distance of Wood Quay and the surviving sections of medieval wall at St Audoen's. A visitor who knows what they are looking for, which is to say a mark on a nearly fifty-year-old specialist map, can stand on the approximate spot and consider what urban medieval Dublin actually felt and smelled like at ground level. The interest is less in the location itself than in what its inclusion on any map at all suggests: that scholars thought it worth recording, that the texture of daily medieval life, including its least glamorous necessities, deserves the same cartographic attention as a church or a tower.