Castell Dolbadarn
Castell Dolbadarn is a castle in Gwynedd, Wales, built by the princes. It lies 100 m east of Llanberis. Its status is a Grade I listed building.
Castle near Llanberis
One of the best-known places to visit in England, Scotland, Wales and Northern Ireland
#161 of the 8,556 museums, castles, gardens and other attractions we list, by how widely it is covered (21 Wikipedias). About ↓
Just outside Llanberis
Castell Dolbadarn is 100 m east of Llanberis. Towns near it ↓
Cared for by Cadw
One of the places Cadw looks after; members usually get in free. About ↓
Grade I listed building
On the official list of protected heritage; Llanberis has 13 listed buildings in all, on its History page. About ↓
Written from OpenStreetMap, Wikidata, the ONS built-up areas and Met Office 1991–2020 averages.
The climate through the year
The warm months in Llanberis are July and August, with 17–18°C highs.
Castell Dolbadarn
Care of the site is provided by Cadw. There are Wikipedia articles on it in 21 languages. Close by, Caernarfon is 11 km away, one of 32 within 15 km.
- Type
- Castle
- Run by
- Cadw
- Listed
- Grade I listed building
- Wikipedias
- Covered in 21 languages
- Town
- 100 m east of Llanberis
Castell Dolbadarn and what surrounds it
Spot Castell Dolbadarn in orange, then follow the numbers to the places below.
© OpenStreetMap contributors · ONS built-up area 2022
Where to base yourself
Bethesda, with 3,757 people, is the largest of the 8. Closest first, each of these towns names it on its page.
Llanberis
Clwt-y-bont
Penisa'r Waun
Llanrug
Compare the 8 towns
| Town | Where Castell Dolbadarn is | People | Places to visit |
|---|---|---|---|
| Llanberis | 100 m west of it | 1,838 | 4 |
| Clwt-y-bont | 3 km north of it | 1,385 | 4 |
| Penisa'r Waun | 4.5 km northwest of it | 235 | 5 |
| Llanrug | 6.1 km northwest of it | 1,537 | 5 |
| Waunfawr | 6.1 km west of it | 928 | 8 |
| Bethesda | 8 km northeast of it | 3,757 | 3 |
| Tregarth | 8.3 km north of it | 1,252 | 6 |
| Bethel | 8.3 km northwest of it | 1,091 | 11 |
Next door to Castell Dolbadarn
3 castles, 2 heritage railways and a fort are among the 32 within 15 km.
FortCaernarfon11 km away2
Castle · CadwCastell Caernarfon11 km away3
MuseumWelsh Slate Museum400 m away4
Heritage railwayLlanberis Lake Railway2 km away5
CathedralBangor Cathedral12 km away6Heritage railwayHeritage railwayWelsh Highland Railway7.4 km away7
Castle · National TrustPenrhyn Castle12 km away8CastleCastleDinas Emrys11 km awayWithin 15 km, close and well known first. Numbers match the map.
Good to know about Castell Dolbadarn
Where is Castell Dolbadarn?
Castell Dolbadarn is 100 m east of Llanberis, Gwynedd.
What is Castell Dolbadarn?
Castle in Gwynedd, Wales, built by the princes of Wales.
Who runs Castell Dolbadarn?
Cadw, so members usually get in free; check opening times before you go.
When is the best time to visit Castell Dolbadarn?
July and August are the warmest months in Llanberis, with afternoon highs of 17–18°C (Met Office 1991–2020 averages).
Is Castell Dolbadarn a listed building?
Yes: Grade I listed building.
What else is there to see near Castell Dolbadarn?
Within 15 km: Caernarfon (11 km), Castell Caernarfon (11 km), Welsh Slate Museum (400 m) and Llanberis Lake Railway (2 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)
- Caernarfon: Nilfanion, CC BY-SA 4.0, Wikimedia Commons
- Castell Caernarfon: Llywelyn2000, CC BY-SA 4.0, Wikimedia Commons
- Welsh Slate Museum: Talsarnau Times, CC BY-SA 4.0, Wikimedia Commons
- Llanberis Lake Railway: The original uploader was Mick Knapton at English Wikipedia., CC BY-SA 3.0, Wikimedia Commons
- Bangor Cathedral: Denis Egan from Bangor, Gwynedd, North Wales, CC BY 2.0, Wikimedia Commons
- Penrhyn Castle: Llywelyn2000, CC BY-SA 4.0, 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.