History of Dublin After the Anglo-Normans taking of Dublin in 1171, many of the city's Norse inhabitants left the old city, which was on the south side of the river Liffey and built their own settlement on the north side, known as Ostmantown or "Oxmantown". Dublin became the capital of the English Lordship of Ireland from 1171 onwards and was peopled extensively with settlers from England and Wales. The rural area around the city, as far north as Drogheda, also saw extensive English settlement. In the 14th century, this area was fortified against the increasingly assertive Native Irish – becoming known as The
Dublin Port Tunnel Dublin Port Tunnel The Dublin Tunnel (Irish: "Tollán Bhaile Átha Cliath"), originally and still commonly known as the Dublin Port Tunnel, is a road traffic tunnel in Dublin, Ireland, that forms part of the M50 motorway. The twin tunnels form a two-lane dual carriageway connecting Dublin Port, which lies to the east of central Dublin, and the M50 motorway at junction 2, close to Dublin Airport. The tunnels are in length and total project length of . It had final cost of approximately €752 million. The tunnel was officially opened on 20 December 2006; it was initially only open to