Castell Harlech
Castell Harlech is a castle in Harlech, Gwynedd. Officially, it is a scheduled monument. Close by, Castell Cricieth is 10 km away, one of 15 within 15 km.
Castle in Harlech
One of the best-known places to visit in England, Scotland, Wales and Northern Ireland
#86 of the 8,556 museums, castles, gardens and other attractions we list, by how widely it is covered (30 Wikipedias). About ↓
Inside Harlech
Castell Harlech is inside Harlech’s built-up area, with 3 more places to visit within 5 km. Towns near it ↓
Cared for by Cadw
One of the places Cadw looks after; members usually get in free. About ↓
Scheduled monument
On the official list of protected heritage; Harlech has 22 listed buildings in all, on its History page. About ↓
Written from OpenStreetMap, Wikidata, the ONS built-up areas and Met Office 1991–2020 averages.
Weather by the month
Aim for June to September, when Harlech reaches 18–19°C.
Castell Harlech
It is cared for by Cadw. Articles on it exist in 30 languages.
- Type
- Castle
- Run by
- Cadw
- Listed
- Scheduled monument
- Wikipedias
- Covered in 30 languages
- Town
- in Harlech
- Official site
- cadw.gov.wales/visit/places-to-visit/harlech-castle
Castell Harlech at a glance
On this map, Castell Harlech is orange and its neighbours are numbered.
© OpenStreetMap contributors · The dashed line is Harlech’s built-up area. · ONS built-up area 2022
Towns around Castell Harlech, by distance
Largest of the 8 is Porthmadog, home to 2,579. Closest first, each of these towns names it on its page.
Harlech
Llanbedr
Morfa Bychan
Porthmadog
Compare the 8 towns
| Town | Where Castell Harlech is | People | Places to visit |
|---|---|---|---|
| Harlech | It’s in town | 1,261 | 5 |
| Llanbedr | 4 km south of it | 339 | 3 |
| Morfa Bychan | 7 km northwest of it | 476 | 4 |
| Porthmadog | 7.7 km north of it | 2,579 | 5 |
| Dyffryn Ardudwy | 8.1 km south of it | 741 | 2 |
| Penrhyndeudraeth | 8.5 km north of it | 1,463 | 5 |
| Tremadog | 9.1 km north of it | 736 | 5 |
| Tal-y-bont | 9.4 km south of it | 469 | 0 |
Pair Castell Harlech with these
Choose from 15 places within 15 km, such as 2 museums, 2 historic sites and a castle.
Castle · CadwCastell Cricieth10 km away2
Heritage railwayWelsh Highland Heritage Railway8.1 km away3
Historic housePlas Brondanw12 km away4
MuseumLloyd George Museum13 km away5Historic siteHistoric site · CadwFfridd Fron Kerb Cairn5.3 km away6Historic siteHistoric siteLlanfair Slate Caverns2.4 km away7AttractionAttractionChildren's Farm Park & Play Barn2.5 km away8MuseumMuseumPorthmadog Maritime Museum7.3 km awayWithin 15 km, close and well known first. Numbers match the map.
Your questions on Castell Harlech
Where is Castell Harlech?
Castell Harlech is in Harlech, Gwynedd, inside the town’s built-up area.
What is Castell Harlech?
Castle in Harlech, Gwynedd, Wales.
Who runs Castell Harlech?
Cadw, so members usually get in free; check opening times before you go.
When is the best time to visit Castell Harlech?
June to September are the warmest months in Harlech, with afternoon highs of 18–19°C (Met Office 1991–2020 averages).
Is Castell Harlech a listed building?
Yes: scheduled monument.
What else is there to see near Castell Harlech?
Within 15 km: Castell Cricieth (10 km), Welsh Highland Heritage Railway (8.1 km), Plas Brondanw (12 km) and Lloyd George Museum (13 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 (5)
- 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
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.