An original and fascinating history of Dublin that tells the story of the city through its bridges. Dublin started life on the south bank of the River Liffey and for six or seven centuries that is more or less where the town stayed. In all that time, there was only one bridge across the river. Then, suddenly, in the twenty years after 1670, three more bridges were thrown up and the north side was born. Within a century, Dublin was being talked of as one of the ten largest cities in the whole of Europe. Built over a span of a thousand years, the twenty bridges that now traverse the tidal section of the Liffey have each contributed to the city's development, as it pushed through the open fields north of the river and east towards the bay, so much so that it is possible to piece together Dublin's history by tracing their construction in chronological order.