The Most Beautiful Places in Gwynedd
7 places ยท updated 14 October 2026
In short: By our ranking, the most beautiful places in Gwynedd are Portmeirion, Menai Suspension Bridge and Ffestiniog Railway. The list covers 7 places. Last updated 14 October 2026.
Gwynedd is the mountain heartland of north-west Wales and the county where Welsh is most widely spoken. Most of Eryri, or Snowdonia, lies within it, and the hard volcanic and slate rocks that built those peaks also made the area rich: slate quarried here roofed much of the industrial world and is now recognised by UNESCO as the Slate Landscape of Northwest Wales. Add the castles Edward I raised to hold the conquered principality and the hillforts that came long before, and few corners of Britain pack so much into so little ground.
Caernarfon Castle, begun in 1283, is the grandest of Edward's fortresses, its polygonal towers and banded stone walls deliberately evoking imperial Constantinople. Two thousand years earlier, people built Tre'r Ceiri on a summit of Yr Eifl on the Llลทn Peninsula, an Iron Age hillfort whose stone walls and dozens of hut circles survive remarkably intact.
The slate trade left the railways. The Ffestiniog Railway, opened in the 1830s to carry slate down to the harbour at Porthmadog, is a narrow-gauge line through mountain scenery that pioneered steam on such small tracks. The Snowdon Mountain Railway, opened in 1896, is Britain's only public rack-and-pinion line and climbs to the summit of Yr Wyddfa, the highest mountain in Wales. On the estuary nearby, Portmeirion is an Italianate fantasy village built by the architect Clough Williams-Ellis over five decades, its pastel buildings and domes famous from the 1960s television series The Prisoner.
In this list
| # | Place | Type | UNESCO |
|---|---|---|---|
| 1 | Portmeirion | Most beautiful village | |
| 2 | Menai Suspension Bridge | Bridge | |
| 3 | Ffestiniog Railway | Heritage railway | |
| 4 | Caernarfon Castle | Castle | โ |
| 5 | Snowdon Mountain Railway | Rack railway | |
| 6 | Harlech Castle | Castle | โ |
| 7 | Tre'r Ceiri | Hillfort |
01 Portmeirion
United Kingdom52.913ยฐ N 4.099ยฐ W
Llywelyn2000 ยท CC BY-SA 4.0 Portmeirion looks like a fragment of the Italian Riviera set down on the Welsh coast. Pastel-coloured houses, arcades, a campanile, a domed pantheon and a hotel cluster on a wooded headland above the sands of the Dwyryd estuary, arranged around a central piazza with all the theatrical charm of a stage set.
Did you know? George Harrison celebrated his 50th birthday at Portmeirion in 1993, and Beatles manager Brian Epstein and Paul McCartney also visited.
02 Menai Suspension Bridge
United Kingdom53.220ยฐ N 4.163ยฐ W
Julian Herzog ( Website ) ยท CC BY 4.0 When Thomas Telford's bridge opened across the Menai Strait on 30 January 1826, its central span of about 176 metres was longer than any other bridge in the world.
Did you know? The original wrought-iron chains were replaced with steel ones in 1938.
03 Ffestiniog Railway
United Kingdom52.924ยฐ N 4.127ยฐ W
Unknown author Unknown author ยท Public domain The Ffestiniog Railway was built to let gravity do the work.
04 Caernarfon Castle
United Kingdom53.139ยฐ N 4.277ยฐ W
- UNESCO World Heritage
Tilman2007 ยท CC BY-SA 4.0 Caernarfon Castle does not look like the other fortresses Edward I raised in Wales. Instead of round towers it has many-sided ones, and its long curtain walls are striped with bands of differently coloured stone. Historians have long debated why.
Did you know? Timber for the works was shipped from as far away as Liverpool, while stone came from Anglesey and quarries around the town.
05 Snowdon Mountain Railway
United Kingdom53.100ยฐ N 4.104ยฐ W
Image by Whitechappel79 from Pixabay The Snowdon Mountain Railway climbs to the summit of Yr Wyddfa (Snowdon), the highest mountain in Wales, and it is the only public rack-and-pinion railway in the United Kingdom. 5.
Did you know? The line was built between December 1894 and February 1896 at a cost of ยฃ63,800, and the first train reached the summit in January 1896.
06 Harlech Castle
United Kingdom52.860ยฐ N 4.109ยฐ W
- UNESCO World Heritage
Image by diego_torres from Pixabay Harlech Castle sits on a crag of grey-green sandstone some sixty metres above the coastal flats of Cardigan Bay, with the mountains of Eryri behind it and the sea spread out in front.
Did you know? Owain Glyndลตr captured the castle in 1404 and held his second parliament at Harlech in 1405.
07 Tre'r Ceiri
United Kingdom52.975ยฐ N 4.424ยฐ W
Llywelyn2000 ยท CC BY-SA 4.0 Tre'r Ceiri, "the town of the giants" in Welsh, clings to the eastern summit of Yr Eifl, the three-peaked hill that rises straight out of the sea on the north coast of the Llลทn Peninsula.
Did you know? On the north and west a second, partial outer wall gave extra protection on the gentler slopes.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented โ the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most beautiful places in Gwynedd?
- On our list, Portmeirion ranks first, followed by Menai Suspension Bridge and Ffestiniog Railway.
- Who built Caernarfon Castle?
- Caernarfon Castle was built for King Edward I of England from 1283, after his conquest of Wales, with the master mason James of St George among those directing the work. It is part of the UNESCO site of the castles and town walls of King Edward in Gwynedd.
- Is Snowdon in Gwynedd?
- Yes. Snowdon, in Welsh Yr Wyddfa, stands in Gwynedd within Eryri National Park and at 1,085 metres is the highest mountain in Wales. The Snowdon Mountain Railway climbs to its summit from Llanberis.
- What was filmed at Portmeirion?
- Portmeirion is best known as the setting of the 1960s television series The Prisoner, in which it played the mysterious Village. The village was designed and built by Clough Williams-Ellis between 1925 and 1975.
- What kinds of places are there to see in Gwynedd?
- In our collection, the places in Gwynedd are most often castles (2), archaeological sites (2), bridges (1) and rack railways (1).
- How many places are on this list in Gwynedd?
- The list covers 7 places.