Ross Castle, Killarney, Co. Kerry, Ireland
Standing on the edge of Lough Leane in Killarney National Park, Ross Castle occupies a location that has been important for thousands of years — long before the stone walls of the castle were ever built.
Long before the medieval O’Donoghue chieftains, this area was already a centre of activity due to its proximity to the Ross Island Copper Mines, which date back to approximately 2400 BC, making them among the earliest known copper mines in Europe. These mines mark the beginning of Ireland’s Bronze Age and highlight just how significant this landscape has been since prehistoric times.
Many artefacts discovered in and around the mining area — including stone tools and evidence of early metalworking — can still be seen today, offering a remarkable insight into life in Ireland over 4,000 years ago. When I bring visitors to Ross Castle, I always like to start with this early history, as it gives a deeper appreciation of why this location mattered long before castles, clans, or conflicts.
As a native of Killarney and a licensed driver and guide, Ross Castle is one of my favourite places to introduce visitors to the layered history of the lakes — from prehistoric mining to medieval power struggles.
The History of Ross Castle
Ross Castle was built in the 15th century by the powerful O’Donoghue Mór clan, who ruled much of the land around Killarney. The castle was strategically positioned on the lake to control access to the surrounding territory.
According to local legend, the last O’Donoghue chieftain escaped capture by diving into Lough Leane on horseback and riding away beneath the water — a story that is still fondly told in Killarney today.
During the Cromwellian Wars, Ross Castle gained further historical significance. In 1652, it became the last Irish stronghold in Munster to fall to Cromwell’s forces, surrendering only after cannon were brought onto the lake — something previously thought impossible.
Ross Castle and the Lakes of Killarney
One of the reasons Ross Castle is so memorable is its lakeside setting. From here, visitors enjoy sweeping views across Lough Leane toward the mountains of MacGillycuddy’s Reeks and the woodlands of Killarney National Park.
Boat trips depart from near the castle, offering a peaceful way to explore the lakes and see Killarney from a different perspective — a lovely option for those who prefer a gentler pace.
Visiting Ross Castle Today
Ross Castle has been carefully restored and is open to visitors during the main tourist season. Guided visits inside the castle provide insight into medieval life, defence, and daily routines within a tower house.
Even without entering the castle, the surrounding area is well worth visiting. The lakeside paths, photo opportunities, and changing light across the water make it one of the most atmospheric spots in Killarney.
Ross Castle on a Private Killarney Tour
Ross Castle pairs beautifully with other nearby highlights such as Killarney House and Gardens, Muckross House, Muckross Abbey, and Torc Waterfall. On a private tour, these sites can be explored at a relaxed pace, with time for stories, scenery, and spontaneous stops.
Seeing Ross Castle with a local guide allows you to understand not just its history, but its place in the wider story of Killarney and the lakes.
Discover Ross Castle with Mary G Tours
Ross Castle is one of the highlights of any visit to Killarney and a place that beautifully introduces visitors to the lakes and landscapes of the national park.
If you’d like to experience Ross Castle and the surrounding area with a local guide who knows these roads and stories well, I’d be delighted to include it on your private tour of Killarney.
We offer bespoke full-day tours which also include the town of Kenmare and half-day tours that cover all of the main attractions in the park. Don’t hesitate to contact us if you need more information.
Frequently Asked Questions about Ross Castle, Killarney
What is Ross Castle famous for?
Ross Castle is famous for its lakeside setting on Lough Leane, its association with the O’Donoghue chieftains, and for being the last castle in Munster to fall to Cromwellian forces in 1652.
How old is Ross Castle?
Ross Castle was built in the 15th century, but the surrounding area has been important since prehistoric times due to the nearby Ross Island Copper Mines dating back to around 2400 BC.
Where is Ross Castle located?
Ross Castle is located on the eastern shore of Lough Leane within Killarney National Park, a short distance from Killarney town.
Can you go inside Ross Castle?
Yes. Ross Castle is open to visitors during the main tourist season, and guided visits inside explain medieval life, defence, and daily routines.
Why did Ross Castle surrender to Cromwell?
Ross Castle surrendered in 1652 after Cromwell’s forces brought cannon onto Lough Leane, making it impossible for the defenders to continue holding the castle.
Ross Castle is a 15th-century tower house located on the shores of Lough Leane in Killarney National Park. Built by the O’Donoghue clan, it was the last castle in Munster to fall to Cromwellian forces and stands near Ireland’s earliest Bronze Age copper mines dating to 2400 BC.
Plan Your Visit
Experience Ross Castle in the Killarney National Park and the scenery in the South West of Ireland— all with a local guide who knows the hidden gems. We offer full-day National Park tours and also half-day tours.
“Many visitors combine the Killarney Tour with other scenic routes in the area such as the Dingle Peninsula, the Ring of Kerry, or the quieter Beara Peninsula”