Caernarfon

Caernarfon sits where the River Seiont meets the Menai Strait, a compact walled town built almost entirely around one extraordinary building. Edward I's castle, begun in 1283 and still unfinished when work stopped in 1330, dominates the skyline with polygonal towers and banded limestone and sandstone that architects modelled on the walls of Constantinople. It's the centrepiece of a UNESCO World Heritage Site that also takes in the town's intact medieval walls, one of the few sets in Britain you can still walk almost the full circuit of.

But Caernarfon isn't a museum piece frozen around its castle. It's a proper working Welsh town, still the administrative and cultural heart of Gwynedd, with one of the highest proportions of Welsh speakers anywhere in the country audible in its streets, shops and pubs. The quay (Cei Llechi) looks out over the Strait to Anglesey, boats still work out of the harbour, and the narrow lanes inside the walls mix independent cafes and old pubs with the seagulls and slate roofs you'd expect of a North Wales port.

Its real advantage is position. Eryri (Snowdonia) National Park starts more or less at the edge of town, with Yr Wyddfa (Snowdon) itself under half an hour's drive away, while the Llŷn Peninsula's beaches and the Menai Strait's sailing waters are equally close. Few bases in North Wales put mountains, coast and a genuinely historic town within such a tight radius.

Top things to do in Caernarfon

Caernarfon rewards a slow wander as much as a checklist, but these are the names worth knowing.

• Caernarfon Castle — the UNESCO-listed fortress built by Edward I and his master mason James of St George; climb the Eagle Tower for views over the Strait and don't miss the Royal Welch Fusiliers Museum housed inside the Queen's Tower.
• Caernarfon Town Walls — nearly 800 metres of 13th-century walls with eight towers and two twin-towered gates, among the most complete surviving town defences in Britain and free to walk much of the circuit.
• Welsh Highland Railway — Britain's longest heritage railway, running steam trains 25 miles from beneath the castle walls up through the foothills of Yr Wyddfa, over the Aberglaslyn Pass, to Porthmadog; a full return trip takes the best part of a day.
• Segontium Roman Fort — the remains of a Roman garrison fort established around AD 77 on the edge of town, one of the longest-occupied Roman military sites in Wales, free to visit and looked after by Cadw.
• Cei Llechi (the Slate Quay) — the harbourfront promenade for views across the Menai Strait to Anglesey, boat trips, and the start point for coastal and cycle paths.
• Menai Suspension Bridge and Britannia Bridge — Thomas Telford's 1826 suspension bridge and Robert Stephenson's later rail crossing, both a short drive or cycle from town, linking the mainland to Anglesey across the Strait.
• Plas Menai and Menai Strait watersports — the National Outdoor Centre on the Strait for sailing, windsurfing and kayaking on some of the most sheltered tidal water in Wales.
• Twthill — a short, sharp climb above the town for a panorama that takes in the castle, the Strait, Anglesey and the mountains of Eryri in one sweep.
• Yr Wyddfa (Snowdon) — Wales's highest peak is around a 25-minute drive away via Llanberis or Rhyd Ddu, making Caernarfon a realistic base for a mountain day without staying in the busier honeypot villages.

Getting to Caernarfon

Caernarfon lost its own passenger rail line decades ago, so the nearest mainline station is Bangor, about nine miles away on the North Wales Main Line, served by Transport for Wales and occasional Avanti West Coast services from London Euston (around three and a half hours). From Bangor, buses run regularly to Caernarfon in around half an hour, or a taxi takes roughly 15-20 minutes.

By road, the town sits just off the A55 North Wales Expressway: leave at the Britannia Bridge junction and follow the A487 south-west into Caernarfon, a route that also serves as the main approach from Chester and the motorway network to the east. From mid and south Wales, the A487 runs the length of the coast via Porthmadog and Dolgellau. Drivers heading in from Snowdonia's interior typically arrive via Llanberis and the A4086/A487.

The nearest airports are Liverpool John Lennon (around two hours by car) and Manchester (roughly two and a half hours), both with wider flight networks than the small regional Anglesey Airport at Valley, which mainly serves the Cardiff route. Parking within the walls is limited and metered; the main long-stay options are the car park behind the castle and Balaclafa Road, both a short walk from the centre, and it's worth booking ahead for Welsh Highland Railway departures in peak season as the station car park fills early.

Best time to visit Caernarfon

Summer (June to August) is when the castle, railway and harbour are at their liveliest, with the longest daylight for mountain days in Eryri, though this is also when Caernarfon and nearby Llanberis see the heaviest coach and day-tripper traffic, and accommodation books up fastest.

Spring, particularly May, brings reliably drier weather than autumn, quieter streets, and Eryri's lower slopes turning green before the summer crowds arrive; it's a good window for walking without the queues at the castle ticket office.

Autumn holds decent weather into September and rewards visitors with a livelier, more local town as day-trippers thin out, though October onward brings the unpredictable rain that North Wales is known for, and hill weather turns serious fast.

Winter is quiet and often atmospheric, with the castle floodlit against short days and the possibility of snow on Yr Wyddfa visible from the town walls, but many smaller attractions and the Welsh Highland Railway reduce services or close entirely, so it suits a short town-and-food break rather than a walking holiday.

Where to stay in Caernarfon

Inside or just outside the town walls puts you within walking distance of the castle, quay and restaurants, and suits couples and short-break visitors who want to explore on foot; expect Georgian townhouse B&Bs and small hotels from around £90-£140 a night in peak season, with prices easing outside July and August.

Along the Menai Strait towards Y Felinheli and Menai Bridge, guesthouses and boutique stays trade town-centre convenience for water views and easier parking, a good fit for couples with a car who still want to be a short drive from Caernarfon and Bangor.

Villages just inside Eryri, such as Llanberis, Waunfawr and Rhyd Ddu (the latter two both stops on the Welsh Highland Railway), suit walkers and families basing themselves for the mountains, with a wider spread of self-catering cottages, farm B&Bs and campsites, generally cheaper than the coast but with fewer evening dining options.

Booking three to four months ahead is sensible for July and August, especially around anything coinciding with major events at the castle or on the railway; outside peak season, a few weeks' notice is normally enough, and last-minute midweek stays in winter are easy to find.

Food and drink in Caernarfon

The Black Boy Inn, dating to 1522 and one of the oldest pubs in Wales, anchors the food scene inside the walls with hearty, locally sourced pub food and a proper range of Welsh ales. Down on the waterfront, Y Wal has built a reputation for modern Welsh cooking using seasonal, local ingredients, while La Marina on Cei Llechi runs as a daytime coffee and brunch spot that shifts into small plates with a Mediterranean lean come evening.

Villa Marina offers Mediterranean dining with views straight across to the castle walls, and a little further out, The Gunroom at Plas Dinas Country House (former home of the Armstrong-Jones family, Earl Snowdon's line) is the destination choice for a special-occasion dinner in a genuinely historic country house setting.

Expect plenty of Welsh lamb, Menai Strait mussels and local cheeses on menus around town, alongside the fish and chip shops and cafes that keep a working harbour town ticking over day to day. For a pint with a view, the pubs and cafes along the quay and around Castle Square are the obvious choice, particularly on a clear evening when the castle catches the light.