Castlewellan Mountain Bike Trails, Co. Down
Castlewellan Mountain Bike Trails, Co. Down Courtesy of MountainBikeNI.com

Castlewellan – A Charming Town with a World‑Class Forest Park

📍 Castlewellan, Down

🏛️ Attraction

Last updated: 4 March 2026

Overview

Castlewellan is a small but vibrant town in the south‑east of County Down, set on the edge of the Mourne Mountains and beside the tranquil Castlewellan Lake. Designed in the 19th century by a French architect for the Annesley family, the town is distinguished by two tree‑lined squares and an unusually wide main street. The upper square houses the 1764 Old Market House, now a public library, while the lower square is framed by chestnut trees that bloom each spring. Beyond the town centre, the crown jewel is Castlewellan Forest Park – a 460‑hectare landscaped estate that offers everything from serene arboretum walks to adrenaline‑pumping water and mountain‑bike activities.

History

The area around Castlewellan bears evidence of ancient settlement, including the early‑Christian Drumena Cashel with its underground souterrain and the nearby Legannany and Goward dolmens. In the 19th century the Annesley family transformed the estate, creating the baronial Castlewellan Castle (1856) and extending the lake. The castle now operates as a privately run Christian conference centre and is not generally open to the public. The surrounding demesne was gifted to the state in 1967 and opened as a public forest park, becoming home to the National Arboretum of Northern Ireland – a living collection that began in 1740 and now boasts champion trees from Spain, Mexico, Wales and beyond. In 2000 the community planted the Peace Maze, a 6 000‑yew‑tree hedge representing a hopeful path to lasting peace.

What to See & Do

The Arboretum and Gardens

The arboretum is a horticultural treasure, featuring rare conifers, Japanese maples and a celebrated ‘Castlewellan Gold’ Leyland Cypress. The walled garden, originally the heart of the 18th‑century estate, showcases formal borders, terraces and water features that change colour with the seasons.

Lakeside Walk (2.4 mi / 3.9 km)

The most popular family route circles the natural lake, offering flat, even surfaces and panoramic views of Slievenaslat and the castle. Bird‑watchers will spot kingfishers and swans, while anglers can fish with a permit.

Longer Trails

  • Slievenaslat Walk – 2.7 mi of gentle ascent to the hill’s summit, rewarding walkers with sweeping Mourne vistas.
  • Moorish Tower Walk – 3.2 mi that passes the whimsical Moorish Tower play structure.
  • Annesley Garden Walk – 2.2 mi through formal gardens and historic planting beds.
  • Cypress Pond Walk – 3.1 mi winding around a serene pond dotted with towering cypresses.
  • Bunkers Hill Walk & Play Trail – 1.2 mi family‑friendly loop with interactive play elements.

Peace Maze

One of the world’s largest permanent hedge mazes, the Peace Maze stretches over 2 miles of winding paths. At its centre sits the Peace Bell, a symbolic reminder of Northern Ireland’s journey toward reconciliation. Dogs are not permitted inside the maze, but the surrounding woodland is dog‑friendly.

Mournes Trails & Ales Tour with Life Adventure Centre, Castlewellan, Co. Down - Embrace a Giant Spirit
Mournes Trails & Ales Tour with Life Adventure Centre, Castlewellan, Co. Down - Embrace a Giant Spirit Courtesy of Tourism Northern Ireland

Animal Wood

Designed for children aged 4‑11, Animal Wood sits beside the maze and features life‑size woodland animal sculptures, a climbing tower modelled on the Moorish Tower, a fire‑man’s pole, rope bridge and a hollow‑tree slide.

Life Adventure Centre

Located within the historic demesne, the Life Adventure Centre offers stand‑up paddle‑boarding, kayaking, canoeing, mountain‑bike and electric‑bike hire, as well as rock‑climbing and coasteering courses. All activities are run by qualified instructors and can be tailored for families, groups or corporate events.

Castlewellan Mountain Bike Trails, Co. Down
Castlewellan Mountain Bike Trails, Co. Down Courtesy of MountainBikeNI.com

Castlewellan Castle (Exterior)

Although the castle’s interior is private, its striking Scottish‑Baronial façade and lakeside setting make for an impressive photo stop. The castle’s grounds are visible from the Lakeside Walk and provide a dramatic backdrop for the park’s events.

Castlewellan Castle, Co Down
Castlewellan Castle, Co Down ©Tourism Ireland by George Munday

Practical Information

Castlewellan Forest Park is open year‑round. Opening times vary by season and are summarised in the table below.

SeasonDatesOpening Hours
March1 Mar – 31 Mar09:00 – 18:00
April – September1 Apr – 30 Sep09:00 – 20:00
October1 Oct – 31 Oct09:00 – 18:00
November – February1 Nov – 28 Feb09:00 – 17:00
Christmas DayClosed

Admission & Parking

  • Foot traffic – free of charge.
  • Vehicle parking – £5 per car (single ticket). Season permits are available (£25 for a single‑car season ticket, £60 for an all‑park car permit, £15 for a minibus up to 24 seats). Motorbike parking is £3 per ticket.
  • Parking facilities – on‑site car park adjacent to the main visitor centre; disabled parking spaces are provided.

Accessibility

  • The park’s main trails, including the Peace Maze and Gardens, are wheelchair‑accessible via a scooter‑friendly route covering roughly six miles.
  • Toilets for disabled visitors are available near the car park and the Life Adventure Centre.
  • Guide dogs are permitted throughout the park, except inside the Play Park and the Peace Maze.

Amenities

  • Café/Tea‑room – seasonal coffee cart near the main car park.
  • Picnic & BBQ areas – tables located beside the car park.
  • Changing rooms & showers – at the Life Adventure Centre.
  • Bike and water‑sport hire – Life Adventure Centre provides mountain‑bike, electric‑bike, kayak, canoe and SUP equipment.
  • Baby‑changing facilities – available in the visitor centre.

Getting There

Castlewellan lies on the A25 road between Downpatrick and Newcastle. The nearest railway station (closed in 1955) was once on the line between Belfast and Newcastle; today the town is best reached by car or bus from Belfast International Airport (approximately 45 km north). Regular bus services connect Castlewellan with Belfast, Newry and the coastal towns of the Mourne area.

Events

The town hosts the annual Soma Festival (music, food and well‑being) and the Celtic Fusion International Musical Arts Festival. The forest park is a regular venue for rowing regattas, archery championships and the Queen’s Regatta on the lake.

Nearby Attractions

  • Tollymore Forest Park – 20‑minute drive, famed for its river‑side walks.
  • Murlough National Nature Reserve – coastal boardwalks and sandy beaches.
  • Slieve Donard – the highest peak in Northern Ireland, 25 minutes away.
  • Legannany Dolmen – a megalithic tomb a short drive north of town.

Whether you are seeking a leisurely stroll among champion trees, a challenging mountain‑bike descent, or a cultural immersion in a town steeped in history, Castlewellan offers a balanced mix of natural beauty, family‑friendly attractions and outdoor adventure.