St Patrick's Cathedral sits on ground where a fifth-century Romano-British slave turned missionary baptised converts from the River Poddle. That river still flows beneath the street, invisible and unannounced.

The cathedral dates to 1191, though most of what you see is Victorian: by the 1800s, the building had deteriorated so badly that records of the medieval construction were largely lost along with the stonework. For over thirty years, it was presided over by Jonathan Swift, author of Gulliver's Travels. Swift is buried here, alongside the woman he may or may not have secretly married. Nearby Marsh's Library still bears bullet holes from the 1916 Easter Rising.

VoiceMap's self-guided audio tours trace the cathedral's role across Dublin's wider story, from the Huguenot refugees Swift welcomed through its doors to the Guinness family's patronage of the surrounding Liberties, placing the building at the centre of the city's literary, religious and social history.