North Wales packs more into a short drive than almost anywhere in Britain. In the space of a long weekend you can stand inside the greatest castles Edward I ever built — a UNESCO ring of them, thrown up in the thirteenth century to hold down a conquered land — climb into the mountains of Eryri, and walk the valleys whose slate once roofed cities across the world. It is a landscape of stone: castle stone, mountain stone, and the grey slate that is now a World Heritage Site in its own right. This is a three-day loop through the best of it.
This is mountain and coast country, so some of it is steep and some of the finest views are earned on foot; the castles, gardens and towns are gentler. We note access where it's confirmed and say "not yet checked" where it isn't, rather than guess.
Two of these castles — Conwy and Caernarfon — are among the finest medieval buildings in Europe, and they get busy. Arrive early, and give the mountains a fine-weather day: Eryri in cloud is a different, lesser place.
Day one — Conwy and the slate valleys
A walled town wrapped around a perfect castle, one of the great gardens of Wales, and the valley where the slate industry — and a good deal of modern Wales — was made.
Conwy Castle and Town Walls
One of Europe's finest medieval fortresses, ringed by an almost intact walled town.
Edward I and his master mason James of St George threw up Conwy Castle and its town walls in a barely believable four years in the 1280s, and the result is one of the great survivals of medieval Europe. Eight blunt towers guard the castle above the estuary, while three-quarters of a mile of town walls, 21 towers and three gateways, still enclose the little town almost unbroken. Climb the ramparts for views over the harbour, the huddle of slate roofs and the mountains beyond. Down in the town, don't miss the tiny quayside house billed as Britain's smallest, and Plas Mawr, a superbly preserved Elizabethan townhouse. Part of the UNESCO-listed Castles and Town Walls of King Edward in Gwynedd.
Our tip Walk the town-wall circuit as well as the castle, it's a separate, mostly free experience that gives the best rooftop views and is easy to miss.
Access not yet checked — please confirm with the venue before you travel.
Worth watching
- Discover the Magic of CONWY, Wales: History, Attractions, Beauty, North Wales MemorySeekers
- North Wales with Wheelsnoheels — an accessible three-day trip Cymru Wales / Visit Wales
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Bodnant Garden
Eighty acres of terraces, water gardens and giant trees overlooking the Carneddau.
Draped across a Conwy Valley hillside with the Carneddau mountains as a backdrop, Bodnant is one of Britain's great gardens. Developed by five generations of one family from 1874 and given to the National Trust in 1949, it falls in dramatic stages from formal Italianate terraces near the house, through shrub borders and meadows, down to a wooded valley of streams, waterfalls and towering conifers known as the Dell. It is perhaps most famous for its laburnum arch, a golden tunnel of blossom said to be the longest in the country, at its brief best in late spring. There's colour and interest across the seasons, from magnolias and rhododendrons to autumn foliage, and plenty of benches to take in the views.
Our tip The laburnum arch flowers for only a couple of weeks in late spring, check timing before a special trip, as it's the one sight that's genuinely fleeting.
Access not yet checked — please confirm with the venue before you travel.
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Llanberis and the National Slate Museum
A lively mountain village with a free slate museum, a lake railway and the rack railway up Snowdon.
Cradled between two lakes at the foot of Yr Wyddfa, Llanberis is the natural base for the northern side of Eryri. The free National Slate Museum occupies the original Victorian workshops of the vast Dinorwig quarry, whose grey terraces still scar the hillside opposite; live demonstrations show how quarrymen split and dressed the slate that roofed the world. From here the narrow-gauge Llanberis Lake Railway steams along the shore of Llyn Padarn, while the Snowdon Mountain Railway, Britain's only public rack-and-pinion line, grinds all the way to the summit. Padarn Country Park adds lakeside and woodland walks, and the ruined Dolbadarn Castle keeps watch over the pass. It's family-friendly, walkable and packed with things to do in poor weather.
Our tip If you want the train to Snowdon's summit, book well ahead, services sell out fast and weather can cut them short at the higher stations.
Access not yet checked — please confirm with the venue before you travel.
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Day two — the castles of Gwynedd and Anglesey
Castle day. The mightiest of Edward's fortresses at Caernarfon, the most perfectly designed at Beaumaris across the water, and the seabird cliffs and lighthouse at the far edge of Anglesey.
Caernarfon Castle
A colossal polygonal-towered castle guarding the Menai Strait.
Caernarfon is the most imposing of Edward I's ring of castles, its banded stonework and distinctive polygonal towers deliberately echoing the walls of Constantinople as a statement of imperial power over the newly conquered Welsh. Begun in 1283, it anchors a walled town on the Menai Strait and has hosted the investitures of Princes of Wales in modern times. Inside, you can climb spiral stairs and wall-walks between the great towers for sweeping views over the strait to Anglesey and back to the mountains of Eryri. The old town within the walls is worth a wander for its independent shops and quayside, and it makes a strong base for both the Llŷn and Anglesey. Part of the UNESCO World Heritage Site.
Our tip The wall-walks and tower staircases are steep and uneven, wear proper footwear, but the climb to the top of the Eagle Tower rewards you with the best views.
Access not yet checked — please confirm with the venue before you travel.
Worth watching
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Beaumaris Castle
Edward I's unfinished masterpiece of symmetrical, concentric design.
The last and most sophisticated of Edward I's Welsh castles, Beaumaris was begun in 1295 on flat ground beside the Menai Strait, freeing its designer James of St George to build a textbook concentric fortress, perfectly symmetrical rings of walls within walls, guarded by a moat once fed by the sea. The money ran out before it was finished, so it never rose to full height, which paradoxically makes its ingenious plan all the easier to read. It's a gentle, family-friendly castle to explore, and the surrounding Georgian town of Beaumaris is a pleasure in itself, with a handsome pier, colourful seafront and views across to the mountains. Part of the UNESCO World Heritage Site.
Our tip Beaumaris pairs well with a walk out along the pier and a boat trip towards Puffin Island for seals and seabirds in season.
Access
Partial wheelchair access Accessible parking
Access last checked 5 Jul 2026 — always confirm with the venue.
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South Stack Cliffs and Lighthouse
A cliff-top RSPB reserve with a lighthouse reached by 400 steps.
On the wild western tip of Holy Island, the sea cliffs at South Stack fall sheer to the water, topped by an RSPB reserve alive in spring and early summer with guillemots, razorbills, puffins and the rare, red-legged chough. A gleaming white lighthouse stands on its own rocky islet, reached by a long, steep flight of steps and a bridge across the churning channel. Ellin's Tower, a little castellated seawatch, has live camera feeds of the nesting ledges, and the surrounding heathland is carpeted with maritime heather and wildflowers. Even without descending to the lighthouse, the cliff-top paths give giddy, exhilarating views along a coast that feels genuinely remote. It's one of the finest short outings on Anglesey.
Our tip Bring binoculars and time your visit for late spring to early summer, when the cliffs are busiest with breeding seabirds including puffins.
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Day three — Eryri and the coast
The mountains and a folly by the sea. A former slate quarry turned adventure park, an Italianate fantasy village on its own wooded estuary, and — for the walkers — one of the loveliest paths up Yr Wyddfa (Snowdon).
Zip World Penrhyn Quarry
Ride Velocity 2, billed as the world's fastest zip line, across a quarry lake.
The huge Penrhyn slate quarry near Bethesda, once among the largest in the world, has been reinvented as an adventure park, and its headline act is Velocity 2, promoted as the fastest zip line on Earth. Four parallel cables let you fly side by side for around a mile over the quarry's blue lake, reaching speeds well over 100mph after a truck ride to the launch point high on the terraces. It's a genuinely exhilarating way to appreciate the sheer scale of the workings that roofed Victorian Britain, now part of a wider slate landscape recognised by UNESCO. There are gentler options and other Zip World sites nearby for those who prefer to keep their feet closer to the ground.
Our tip There are minimum and maximum weight limits for the fast zip line, so check the requirements before booking for younger or lighter members of the group.
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Portmeirion
An architect's whimsical Mediterranean village on a wooded Welsh estuary.
Portmeirion is the lifelong folly of architect Sir Clough Williams-Ellis, who spent half a century from 1925 assembling this pastel-coloured Italianate village on a private peninsula above the Dwyryd estuary. Bell towers, colonnades, a piazza and a dome cluster around ornamental gardens, with rescued architectural fragments woven in, his way of proving beauty and development could coexist. Beyond the village, wooded coastal paths wind through the subtropical Gwyllt gardens, thick with rhododendrons and exotic trees. Fans of cult 1960s television will recognise it as the set of The Prisoner. It's an entry-fee attraction rather than a real settlement, but genuinely one of a kind, and lovely to wander on a bright day.
Our tip Give yourself time for the woodland Gwyllt paths beyond the village, most day visitors never leave the piazza and miss the best of the gardens.
Access not yet checked — please confirm with the venue before you travel.
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Watkin Path up Yr Wyddfa (Snowdon)
The prettiest and toughest of the paths to the summit of Yr Wyddfa.
Widely rated the most beautiful of the six routes up Yr Wyddfa, the Watkin Path starts low in the wooded Nant Gwynant valley and climbs past the tumbling waterfalls and pools of Cwm Llan before a steep, loose final pull to the 1,085m summit. It is also the hardest of the standard routes: you begin near sea level, so the full ascent is relentless, and the last section across scree demands care in poor weather. Named after the Victorian railway magnate Sir Edward Watkin, whose namesake track was Wales's first designated footpath, it rewards the effort with views over the Glaslyn valley and, on a clear day, out to the sea. Come prepared for mountain conditions in any season.
Our tip The scree above Bwlch Ciliau is genuinely awkward underfoot, many walkers find it harder coming down than going up, so allow plenty of time for the descent.
Access not yet checked — please confirm with the venue before you travel.
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Before you set off
North Wales roads are scenic but slow, especially over the passes and along the coast in summer, so allow more time than the distances suggest. The mountain weather turns fast — carry a layer and check the forecast before committing to a summit. Place names are Welsh and worth a try; locals appreciate it. And if you'd like to add Pembrokeshire or the south, or apply your own access needs across the trip, open it in the planner and make it yours.