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Fort · near Bryncrug · Gwynedd

Craig yr Aderyn

Look for Craig yr Aderyn, a fort, 4.7 km northeast of Bryncrug. It is protected as a National Monument of Wales. Nearby, Castell y Bere (2.8 km) heads a list of 14 within 15 km.

Where
4.7 km
northeast of Bryncrug
Warmest months
Jun–Aug
highs of 17–19°C
In brief

Fort near Bryncrug

Just outside Bryncrug

Craig yr Aderyn is 4.7 km northeast of Bryncrug. Towns near it ↓

National Monument of Wales

On the official list of protected heritage; Bryncrug has 7 listed buildings in all, on its History page. About ↓

Written from OpenStreetMap, Wikidata, the ONS built-up areas and Met Office 1991–2020 averages.

When to go

Seasons in Bryncrug

For warmth, aim for June to August (17–19°C highs in Bryncrug).

Jan8° / 4°123 mm
Feb8° / 3°118 mm
Mar9° / 4°94 mm
Apr12° / 5°85 mm
May15° / 8°97 mm
Jun17° / 11°109 mm
Jul19° / 13°107 mm
Aug19° / 13°122 mm
Sep17° / 11°120 mm
Oct13° / 8°179 mm
Nov10° / 5°153 mm
Dec8° / 3°160 mm
Green months are the warmest. Typical afternoon highs and night lows in Bryncrug, and rain in a month. Met Office HadUK-Grid 1991–2020 averages for Bryncrug. Opening times change through the year: check before you go. Bryncrug’s full climate →
About

Craig yr Aderyn

Hillfort in Llanfihangel-y-Pennant, Gwynedd.

Bryncrug’s listed buildings and monuments →

Type
Fort
Listed
National Monument of Wales
Town
4.7 km northeast of Bryncrug
Facts: Wikidata (CC0) and OpenStreetMap (© OpenStreetMap contributors).
The map

Getting your bearings

The numbers show what else is near Craig yr Aderyn, in the order listed below.

12345678

© OpenStreetMap contributors · ONS built-up area 2022

Towns near it

Towns near Craig yr Aderyn

Every town below has its own grades, prices and places to visit.

1 · 4.7 km southwest of it

Bryncrug

602 people · 2 places to visit

Make a day of it

Worth adding to a visit

The 14 places within 15 km include 3 museums, 2 castles and a heritage railway.

1CastleCastle · CadwCastell y Bere2.8 km away2Heritage railwayFairbourne Railway6.6 km away3CastleCastleAberdyfi Castle11 km away4MuseumCentre for Alternative Technology11 km away5Abbey or priory · CadwCymer Abbey15 km away6Art galleryMOMA Wales12 km away7MuseumNarrow Gauge Railway Museum8.7 km away8MuseumOwain Glyndŵr's Parliament House12 km away

Within 15 km, close and well known first. Numbers match the map.

Planning a visit to Craig yr Aderyn

Where is Craig yr Aderyn?

Craig yr Aderyn is 4.7 km northeast of Bryncrug, Gwynedd.

What is Craig yr Aderyn?

Hillfort in Llanfihangel-y-Pennant, Gwynedd.

When is the best time to visit Craig yr Aderyn?

June to August are the warmest months in Bryncrug, with afternoon highs of 17–19°C (Met Office 1991–2020 averages).

Is Craig yr Aderyn a listed building?

Yes: National Monument of Wales.

What else is there to see near Craig yr Aderyn?

Within 15 km: Castell y Bere (2.8 km), Fairbourne Railway (6.6 km), Aberdyfi Castle (11 km) and Centre for Alternative Technology (11 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)

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.