When does a hill become a mountain? Irish summits over 500m are dubbed ‘arderins’, and at 555m high, Prince William’s Seat falls into this mid-height category. Thanks to a great location on the Dublin/Wicklow border, the fine summit views encompass Dublin city, the Irish Sea and high peaks in both counties.

Park beside Boranaraltry Bridge, then follow yellow Wicklow Way signs to the end of the lane and onto a zig-zagging forest track. When you emerge from the trees, continue ahead onto the hill’s eastern shoulder. Here you leave the Wicklow Way, and turn right onto an informal path that climbs the heather-covered slope.

The summit itself is marked by a trig pillar. The origin of the hill’s name are unclear – it may have been named after the brother of King George IV, or the Fitzwilliam family who once owned these lands. When you’re ready, follow another path northeast, and descend back to the forest and Wicklow Way. Retrace your outward steps back to the start.

- Helen Fairbairn
 

Don’t Miss

Wide-ranging views from the summit

Walking in late summer when blooming heather turns the mountain purple

Practical Information

Wear boots – there may be some boggy sections underfoot

The entire Wicklow Way extends over 130km and is one of Ireland’s most celebrated long-distance hikes