Ireland's oldest national park — 10,000 hectares of mountains, lakes, ancient woodlands and waterfalls on the doorstep of Killarney town, with a UNESCO Biosphere Reserve designation and the country's last indigenous red deer herd.
A Victorian mansion dating from 1843, set on the shores of Muckross Lake. Self-guided tours take you through ornate period rooms. The surrounding gardens are free to explore and include a walled garden centre with a restaurant and craft shop. Open year-round; last admission is 45–80 minutes before closing depending on season.
A 20-metre cascade on the Owengarriff River, just off the N71. A small car park sits 200 metres from the viewing area — it's barely a 5-minute walk. For the more ambitious, a 5km or 10km loop trail leads from Muckross House through woodland to the falls and back. Free to visit.
A 15th-century tower house on the shores of Lough Leane, once the stronghold of the O'Donoghue clan. Guided tours (€5 adult, €3 child, €13 family) run late February to early November, 9:30–17:45. Even without a tour, the castle exterior and lakeside setting are worth the trip. Two free car parks on site.
Nine marked trails range from the easy 1km Old Boathouse Trail to the moderate 5.6km Arthur Young's Walk through the Reenadinna yew woods — one of only three such woodlands in Europe. The Knockreer Circular (5km) and Lakeside Walk (5km return) are popular choices with lake and mountain views. Stick to marked trails; only experienced hikers should tackle the hills.
The park's Visitor Centre houses an interactive exhibition about the park's heritage and ecology. The restored gardens are free to stroll. Open Thursday to Monday, 9:15–17:15 (last exhibition entry 17:00). Closed Tuesday and Wednesday.
Three working farms re-create rural Irish life of the 1930s–40s, with thatched cottages, livestock and costumed guides. Open seasonally: daily June–August (10am–6pm), weekends only in spring and autumn, closed November–February. Entry €11 adult, €8 child, or €18 joint with Muckross House.
A remarkably well-preserved 15th-century Franciscan friary with a cloistered courtyard dominated by an ancient yew tree. Open 24/7 with two free car parks — one on the N71 opposite the National Park entrance and a second smaller one further along. No admission charge.
Cycling is permitted on designated paths — bikes can be hired in Killarney town. For a different perspective, boat tours depart from Ross Castle onto the Lakes of Killarney (around €17 for 1 hour), or you can hire a traditional jaunting car (horse-drawn cart) from town to tour the park in style.
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