An hour south of Dublin, deep in the Wicklow Mountains, a glacial valley cradles one of Ireland’s most haunting early Christian sites. Glendalough — the Valley of Two Lakes — was founded by St. Kevin in the 6th century and grew into a major monastic city before its decline in the 12th century. What remains today is a stunning ensemble of stone churches, a near-perfect round tower, and miles of forest and lake trails that make this one of Ireland’s most rewarding day trips.
Unlike many heritage sites, Glendalough feels lived-in by the landscape. Deer wander the cemetery at dawn. The Upper Lake reflects surrounding peaks. And the round tower, rising 100 feet above the ruins, still commands the valley as it has for a thousand years.
What to See at the Monastic Site
The main monastic complex sits near the Lower Lake, accessible via a short walk from the visitor center. Start at the gateway — a double stone arch that once marked the entrance to the sacred enclosure. It’s one of the only surviving monastic gateways in Ireland.
The round tower is the site’s centerpiece, built around 1066 and still intact. Its doorway sits ten feet above ground, designed for defense. Beyond it, the roofless Cathedral of St. Peter and St. Paul is the largest structure, with a beautiful Romanesque chancel arch and stone carvings still visible after nine centuries.
Don’t miss St. Kevin’s Church, a small stone building with a miniature round tower for a belfry — locally called St. Kevin’s Kitchen because early antiquarians mistook the tower for a chimney. The graveyard surrounding the site is still in use, with Celtic crosses dating back centuries standing among newer headstones.
The visitor center charges around $5 USD for entry and offers helpful exhibits on monastic life and the site’s archaeology. It’s worth the stop before you explore the ruins.
Walking the Upper Lake Trail
Most visitors spend an hour at the monastic site and leave. The better move is to continue west along the Green Road to the Upper Lake, about a 20-minute walk through oak and pine forest. This is where Glendalough earns its reputation as one of Wicklow’s most beautiful places.
The trail hugs the northern shore of the Upper Lake, passing the remains of Reefert Church and St. Kevin’s Cell, a tiny stone beehive hut perched above the water where the saint is said to have lived as a hermit. The trail continues to the old miners’ village — Glendalough was a lead and zinc mining center in the 19th century — and loops back along the southern shore for a full circuit of about 90 minutes.
For a longer hike, the Spink Trail climbs steeply above the lake’s south side, offering stunning views down into the valley. It’s a challenging loop of about three hours, with some exposed rocky sections, but the panorama from the ridge is the best in Wicklow.
When to Visit and How to Get There
Glendalough is busiest on summer weekends and public holidays, when the car parks fill by mid-morning. Early morning or late afternoon visits, especially on weekdays, offer a quieter experience — and better light for photography. Autumn is spectacular, when the valley’s oak and rowan trees turn gold and crimson.
From Dublin, take the M11 south and then the R755 through Laragh. The drive takes about an hour and a half. Parking costs around $5 USD at the lower lot near the visitor center, or you can park for free in Laragh and walk the 20 minutes in along the road.
St. Kevin’s Bus runs daily from Dublin to Glendalough, departing from near St. Stephen’s Green. The round-trip fare is around $20 USD. Viator also offers guided day tours from Dublin that combine Glendalough with stops in Kilkenny or the Wicklow Gap — worth considering if you don’t want to drive.
Where to Eat and Stay Nearby
The village of Laragh, just a mile east of Glendalough, has a handful of pubs and cafés. Wicklow Heather Restaurant serves solid Irish comfort food — beef and Guinness stew, brown bread, strong tea — and the Glendalough Hotel’s bar does decent sandwiches and soup if you need a quick lunch.
For overnights, the Glendalough Hotel sits right at the valley entrance and offers simple rooms with views of the Glenealo River. In Laragh, Lynham’s Hotel is family-run and unpretentious, with a good pub downstairs. Both run around $120–$160 USD per night.
If you’re basing yourself in Dublin, Glendalough makes an easy half-day or full-day trip. But staying nearby lets you explore the valley at sunrise or dusk, when the crowds vanish and the place feels like it belongs to St. Kevin’s original hermits again.
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