Dún Laoghaire: A Historic Seaside Town on Dublin Bay

Just 11 kilometres from Dublin city centre, Dún Laoghaire is one of the most attractive places to visit on Dublin Bay. With its magnificent harbour, long granite piers, Victorian architecture, seaside walks, museums and literary connections, the town offers a fascinating mixture of Irish history and coastal scenery.

It is an ideal destination for visitors who want to experience something beyond Dublin city centre — and it is particularly easy to reach by DART.

From Dunleary to Dún Laoghaire

The story of Dún Laoghaire goes back much further than the impressive harbour that dominates the town today.

The name Dún Laoghaire means “Fort of Laoghaire” and is traditionally associated with Lóegaire mac Néill, a fifth-century High King of Ireland. Tradition suggests that a fort once stood in the area and that it was associated with Lóegaire, although the details of this early history should be treated as tradition rather than established fact.

By the 18th century, there was already a small fishing settlement here. Historic maps show the settlement under names including Dunlary and Dunleary. The original village was situated around the area of what is now the Purty Kitchen, close to the old harbour.

The town's history changed dramatically in the early 19th century.

The Disaster That Helped Create the Harbour

On the night of 18–19 November 1807, two troopships, the Rochdale and the Prince of Wales, were caught in severe weather in Dublin Bay. Around 400 people lost their lives when the ships were wrecked. The tragedy strengthened the campaign for a safe harbour close to Dublin.
The result was the construction of what became one of Ireland's great maritime landmarks: Dún Laoghaire Harbour.

Construction began in 1817 and continued for 42 years, finally being completed in 1859. The harbour was built with two enormous granite piers, creating a sheltered basin for shipping. Granite from nearby Dalkey Quarry was used extensively in their construction.

Today, walking along the piers remains one of the best ways to appreciate the scale of this extraordinary piece of engineering.

Kingstown and the Visit of George IV

The town was historically known in English as Dunleary. When King George IV visited the newly developing port in 1821, the town was renamed Kingstown in his honour.

The name Kingstown remained for almost a century before the town returned to its Irish name, Dún Laoghaire, in August 1920.

Visitors can still see a reminder of this royal connection in the harbour area: an obelisk commemorating George IV's departure and the renaming of the town.

Ireland's First Railway

One of Dún Laoghaire's most important contributions to Irish history is its connection with the railway.

On 17 December 1834, Ireland's first railway opened between Dublin and Kingstown. The line ran for approximately five and a half miles from Westland Row in Dublin to Kingstown.

Irish Rail describes the Dublin–Kingstown railway as Ireland's first railway and the world's first dedicated commuter railway.

The railway transformed the town. Kingstown became much easier to reach from Dublin, encouraging the development of new houses and helping establish it as a fashionable suburb and seaside resort.

In 1844, the railway was extended towards Dalkey using the famous Dalkey Atmospheric Railway. It was an innovative experiment in railway technology and was eventually replaced by conventional steam railway operation.

The railway connection continues to this day. Dún Laoghaire is now served by the DART, which began operating in 1984.

Walk the Famous East Pier

For many visitors, the highlight of Dún Laoghaire is simply walking along the harbour.

The East Pier stretches for about a kilometre into Dublin Bay and offers wonderful views across the water towards the Dublin and Wicklow coast. A Victorian bandstand adds to the character of the promenade, while the lighthouse marks the end of the pier.

The East Pier also has a connection with Irish cinema. It featured in the 1996 film Michael Collins, starring Liam Neeson, with the film's famous seaside walking scene using the pier and its historic bandstand.

It is an especially enjoyable walk on a clear day, when you can look across Dublin Bay and watch boats entering and leaving the harbour.

Dún Laoghaire's Maritime History

The town's identity has always been closely connected with the sea.

For much of the 19th and 20th centuries, Dún Laoghaire was an important passenger port, with ferry services connecting Ireland with Britain. The regular Holyhead ferry eventually moved to Dublin Port, with Dún Laoghaire's service ending in 2015.

One of the darkest episodes in the harbour's history was the sinking of the RMS Leinster.

On 10 October 1918, the passenger and mail ship was travelling from Kingstown to Holyhead when it was torpedoed by German submarine UB-123 near the Kish Bank. The ship sank with the loss of 567 people out of 806 passengers and crew.

Today, the story of the Leinster can be explored at the National Maritime Museum of Ireland, housed in the historic Mariners' Church overlooking the harbour.

National Maritime Museum of Ireland

The National Maritime Museum is one of Dún Laoghaire's most interesting attractions for anyone interested in Irish history.

The museum is housed in the town's historic Mariners' Church, a remarkable building that dates from the 19th century. Exhibits explore Ireland's maritime heritage through ship models, equipment, photographs and personal stories. The museum also has exhibitions relating to the RMS Leinster, including material concerning its passengers, crew and survivors.

The museum is particularly convenient for visitors arriving by train — it is only a few minutes' walk from Dún Laoghaire DART station.

The Dún Laoghaire Baths

South of the harbour lies Scotsman's Bay, another part of the town where Dún Laoghaire's Victorian seaside heritage can still be appreciated.

The Dún Laoghaire Baths have a history stretching back to the 19th century. After decades of decline and closure, the historic site underwent a major restoration and reopened to the public in December 2022. The redevelopment created facilities for sea swimming and watersports while retaining important historic elements of the site.

The restored Baths are now an important part of the town's seafront and provide another reason to explore the area beyond the harbour.

The People's Park

If you want to take a break from the seafront, head towards the People's Park at the eastern end of George's Street.

The park was established in 1890 on the site of a former quarry and has a distinctly Victorian character, with landscaped areas, fountains, a bandstand and other features.

It is also a good place to experience a different side of Dún Laoghaire — one that combines the town's Victorian past with its modern-day café and cultural scene.

Dún Laoghaire and James Joyce

Dún Laoghaire and the surrounding coastline have strong connections with some of Ireland's most celebrated writers.

James Joyce frequently incorporated the area into his work. In Ulysses, he refers to Kingstown Pier as a “disappointed bridge”. The nearby James Joyce Tower at Sandycove is particularly significant: Joyce stayed there with Oliver St John Gogarty, and the opening of Ulysses is set there.

Although the tower is technically in Sandycove rather than central Dún Laoghaire, it is close enough to make an excellent addition to a coastal visit.

Dún Laoghaire is also associated with Samuel Beckett, who was born in nearby Foxrock. A plaque on the East Pier commemorates his connection with the area and the inspiration associated with his experience of the sea and the harbour. The precise story surrounding his artistic inspiration is best treated as a local tradition rather than an established historical fact.

The Royal Marine Hotel

Dominating the seafront near the harbour is the impressive Royal Marine Hotel.

The site had already been occupied by a hotel known as Hayes Hotel from 1828. Railway pioneer William Dargan acquired it in 1863 and developed the building into the Royal Marine Hotel, which opened in 1865.

Over the years, the hotel has welcomed royalty, heads of state and famous entertainers, adding another layer to Dún Laoghaire's history as a fashionable seaside destination.

Why Visit Dún Laoghaire?

Dún Laoghaire is much more than a pleasant seaside town.

It tells the story of Ireland's maritime past, the development of the railway, Victorian tourism, literary Dublin and modern coastal life all in one compact destination.

You can walk along an enormous 19th-century harbour, visit a maritime museum, explore Victorian seaside architecture, relax in the People's Park, enjoy the views across Dublin Bay and follow in the footsteps of writers such as James Joyce.

Best of all, you don't need a car. The DART makes Dún Laoghaire an easy excursion from central Dublin, while its compact layout means that many of the main sights can be explored on foot.

For visitors looking to discover the history and character of Dublin beyond the city centre, Dún Laoghaire makes an excellent coastal day out.