Overview
Ross Castle is a 15th-century tower house and keep on the edge of Lough Leane in Killarney National Park. It is the ancestral home of the Chiefs of the Clan O'Donoghue and was later associated with the Brownes of Killarney.
Legend says that O'Donoghue still slumbers under the waters of the lake - every seven years, on the first morning of May, he rises on his magnificent white horse, and anyone who catches a glimpse of him is promised good fortune for the rest of their life.
What You'll See
Visitors can tour the restored interior of the castle by joining a guided OPW tour. Inside, you'll climb narrow spiral staircases, walk through authentically furnished rooms from the 16th and 17th centuries, and learn about life in a fortified medieval Irish home.
The grounds themselves are spectacular, with views across Lough Leane toward Innisfallen Island and the MacGillycuddy's Reeks in the distance, with ducks, geese, and deer roaming around the castle.
Visitor Essentials
Access to the castle interior is by guided tour only, on a first come, first serve basis.
Tips
The site is very busy during summer months and visitors may experience delays - arriving at opening or late afternoon gives the best chance of a short wait and keep in mind the car park fills quickly in peak season.
The castle is a 5-minute drive, 10-minute cycle, or 40-minute walk from Killarney town. Last time I checked, tickets could still only be purchased at reception on the day - they cannot be pre-booked.
Access has a very steep incline that is challenging for visitors with mobility issues, and photography is not allowed inside the tower. Combining the visit with a one-hour Lakes of Killarney boat tour departing from the castle pier is a popular way to see the fortress from the water and often includes a stop at Innisfallen Island, home to a 7th-century monastic settlement.
Official Site: https://heritageireland.ie/places-to-visit/ross-castle