Wicklow

Glendalough — literally “the valley of the two lakes” — began as the retreat of St Kevin, a 6th-century hermit who reportedly sought out the valley's isolation specifically to escape company, before a monastic community gradually grew around his presence and developed into one of early medieval Ireland's most significant centres of learning. The Round Tower, over 30 metres tall and among the best-preserved examples in Ireland, served a dual purpose typical of these structures — a bell tower calling monks to prayer, and a place of refuge and valuables storage during raids, with its entrance set several metres above ground level, reached only by a removable ladder. The valley's two lakes, Upper and Lower Lough, were carved by glacial action long before the monastery's founding, and the surrounding oak woodland and mountain trails now draw as many hikers as visitors focused purely on the monastic ruins.

Powerscourt Estate pairs two genuinely distinct attractions under one property: the formal, terraced gardens surrounding Powerscourt House, laid out in the 1840s-1870s in a grand Italianate and Japanese-influenced style with sweeping views toward the Sugar Loaf mountain, and the Powerscourt Waterfall, several kilometres away on the wider estate, which at around 121 metres is Ireland's highest waterfall. The two sites are genuinely separate destinations requiring their own visits rather than a single combined stop, and the waterfall in particular rewards checking conditions after heavy rain, when its flow becomes considerably more dramatic than in drier weather. Powerscourt is a concrete example of the settlement pattern behind Ireland's designed estate landscapes — Wicklow's concentration of them is exactly what the wider anglicized east produced.

The Wicklow Way, opened in 1980, was Ireland's first officially waymarked long-distance walking trail, running roughly 130 kilometres from south Dublin through the Wicklow Mountains to County Carlow — a genuinely foundational project that established the waymarking system, route-planning approach and public-access agreements every subsequent Irish long-distance trail has followed since. Sections through Wicklow's granite uplands, including passages near Glendalough itself, remain among the most walked stretches of any Irish trail specifically because of how directly accessible the route is from Dublin, letting walkers tackle a single day's section without committing to the full multi-day route.