Overview
Rossmore Forest Park is a free 320-hectare Coillte woodland a few kilometres south-west of Monaghan town, and it earns its place as a local day-out on five fishing lakes, a good playground and a set of waymarked trails through an old estate. Two enormous Sierra redwoods stand near the main entrance on the R189, planted more than 150 years ago; beyond them the wood shifts through oak, ash, beech, spruce and larch, with historic rhododendron and azalea plantings that colour the forest floor purple, pink and red through spring and early summer. If you only do one trail, do the Castle Trail – it carries the history and the yews.
A layered history
The Rossmore estate belonged to the Westenra family, ennobled when the Barony of Rossmore was created in 1769. In 1827 Warner Westenra began building Rossmore Castle in a Tudor-Gothic style; his son Henry Robert Westenra completed it, and by the 1830s travel writers were praising the “handsome mansion” and its “beautifully diversified demesne.”
The house didn’t survive the 20th century. Dry rot took hold, the castle was declared unsafe, and it was demolished in 1974. The landscape still holds its shape, though: the central hill keeps the castle’s footprint, and stone steps climb the terraced lawns toward the old viewpoints. Other traces of the estate remain scattered through the park – a walled garden, a pet cemetery, a family crypt, and prehistoric monuments including a wedge tomb and a court tomb dating to 3000–1800 BC. A gold lunula unearthed here around 1930 now sits in the National Museum of Ireland in Dublin. The 4th Lord Rossmore died in a steeplechase fall in 1874, and the family mausoleum in the park marks the era.
Walking and cycling trails
Rossmore is built for movement, with marked routes for different paces. All trails are free and dog-friendly (keep dogs under close control).
- Castle Trail: the historical loop, past the castle ruins, walled garden, fish hatchery and reservoir. Its standout is a 500-metre avenue of ancient yews running from the walled garden to the crypt.
- Lakes Trail: follows the shoreline of the park’s fishing lakes, with a wooden viewing platform for a quiet sit by the water.
- Nature Trail: a fully accessible tarmac track from the car park, with interpretive panels on local flora and fauna, finishing at a sheltered picnic area with lake views.
- Priestfield Walk: a longer loop of roughly 3 km (sources vary) shaded by mature yews, passing the mausoleum and opening onto views across the Monaghan countryside.
- Family Cycle Trail: a gentler route that suits casual cycling and pushchairs.
The walks range from about 1 km to 8 km, and they’re well signposted throughout.
Play, art and family activities
The award-winning super-playground has modern climbing structures and sensory equipment, and a contemporary sculpture trail threads large-scale artworks through the trees. A small piece of film trivia: the 2007 horror Shrooms was shot here, which the wetter, greyer stretches of the wood will make entirely believable.
Wildlife and nature
The mix of woodland and water supports a good range of species. Otters, badgers and foxes are regular residents, with hedgehogs and pigmy shrews in the undergrowth, and at dusk five of Ireland’s seven bat species come out over the trees. Wildfowl gather on the lakes in winter and flycatchers arrive in summer. The five lakes are stocked for coarse fishing. Spring and early summer are the most rewarding time to come, when the azalea and rhododendron are in full colour and the longer evenings make the bigger loops easier to fit in.
Practical information
- Location: Off the R189, about 3.5 km south-west of Monaghan town.
- Opening hours: Open year-round; the car park and main facilities run dawn to dusk.
- Entry and costs: Free admission, free parking.
- Getting there: There’s no direct public transport – the usual route without a car is a bus to Clones and a taxi from there. Note the 1.8 m height barrier at the car park, which rules out taller campervans.
- Facilities: Disabled-accessible toilets, picnic tables, a weather-protected trail map board, a coffee dock at the entrance and a fully equipped playground.
- Accessibility: The Nature Trail and the tarmac path to the picnic area are wheelchair-accessible. Most gravel trails suit strollers and moderate fitness, though some sections turn uneven after heavy rain.
- Best time to visit: Spring and early summer for the floral displays; autumn for foliage and fewer people.
- Nearby stops: Within easy reach of Dartrey Forest and the heritage sites and independent shops of Monaghan town.
Allow a couple of hours for a trail or two plus the playground or a lakeside bench. Wear sturdy footwear beyond the tarmac Nature Trail, and bring a light layer even on a warm day – the canopy keeps the forest floor noticeably cooler than the fields outside.