Llanfair Slate Caverns
On the map, Llanfair Slate Caverns is a historic site 800 m south of Harlech. There are 16 more places to see within 15 km, beginning with Castell Harlech (2.4 km).
Historic site near Harlech
Just outside Harlech
Llanfair Slate Caverns is 800 m south of Harlech. Towns near it ↓
Written from OpenStreetMap, Wikidata, the ONS built-up areas and Met Office 1991–2020 averages.
Weather by the month
The warmest afternoons in Harlech run June to September, at 18–19°C.
Llanfair Slate Caverns
Historic site.
- Type
- Historic site
- Town
- 800 m south of Harlech
- Official site
- llanfairslatecaverns.co.uk
Mapping Llanfair Slate Caverns
The map centres on Llanfair Slate Caverns, in orange, with nearby places numbered.
© OpenStreetMap contributors · ONS built-up area 2022
The nearest towns
With 1,261 people, Harlech is the largest of the 3. Nearest first, every town here counts it among its places to visit.
Compare the 3 towns
| Town | Where Llanfair Slate Caverns is | People | Places to visit |
|---|---|---|---|
| Harlech | 800 m north of it | 1,261 | 5 |
| Llanbedr | 1.6 km south of it | 339 | 3 |
| Dyffryn Ardudwy | 4.5 km south of it | 741 | 2 |
Next door to Llanfair Slate Caverns
Choose from 16 places within 15 km, such as 2 castles, 2 museums and a heritage railway.
Castle · CadwCastell Harlech2.4 km away2
Castle · CadwCastell Cricieth12 km away3
Heritage railwayWelsh Highland Heritage Railway10 km away4
Historic housePlas Brondanw14 km away5
MuseumLloyd George Museum14 km away6Historic siteHistoric site · CadwFfridd Fron Kerb Cairn6.3 km away7AttractionAttractionChildren's Farm Park & Play Barn200 m away8
MuseumSailors' Institute14 km awayWithin 15 km, close and well known first. Numbers match the map.
Your questions on Llanfair Slate Caverns
Where is Llanfair Slate Caverns?
Llanfair Slate Caverns is 800 m south of Harlech, Gwynedd.
What is Llanfair Slate Caverns?
Historic site.
When is the best time to visit Llanfair Slate Caverns?
June to September are the warmest months in Harlech, with afternoon highs of 18–19°C (Met Office 1991–2020 averages).
What else is there to see near Llanfair Slate Caverns?
Within 15 km: Castell Harlech (2.4 km), Castell Cricieth (12 km), Welsh Highland Heritage Railway (10 km) and Plas Brondanw (14 km).
Places: OpenStreetMap (© OpenStreetMap contributors, Open Database Licence) and Wikidata (CC0), placed in the ONS 2022 built-up area (Open Government Licence v3.0). Visitor counts are the latest Wikidata gives, with their year.
Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
Photo credits (6)
- Castell Harlech: Llywelyn2000, CC BY-SA 4.0, Wikimedia Commons
- Castell Cricieth: Barry Skeates from newbury, UK, CC BY 2.0, Wikimedia Commons
- Welsh Highland Heritage Railway: Nigel Cliff, CC BY 2.0, Wikimedia Commons
- Plas Brondanw: Original uploader was Oosoom at en.wikipedia, CC BY-SA 3.0, Wikimedia Commons
- Lloyd George Museum: John Firth, CC BY-SA 2.0, Wikimedia Commons
- Sailors' Institute: Mark Percy, CC BY-SA 2.0, Wikimedia Commons
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.