Castell Llanddeiniolen

No. 282 of 3,435 in Eryri (Snowdonia), No. 100 for history. History, 5.3 km from Llanberis, just outside Eryri (Snowdonia) National Park.

A castle site at Llanddeiniolen, protected as a scheduled monument.Written by Claude from the facts on this page (describe-v1, 2026-10-30).

Facts

Heritage
Scheduled monumentCadw, designated historic assets of Wales (DataMapWales), checked 2026-10-30
Best months
Any time of yearoffyougo rules
Getting there
Directions in Google Mapswhat3words addressOpen in OpenStreetMap

Why it ranks here

Score 0.65 for any trip, from the same formula as every place.

Stay nearby

Within 8 km, best first
Lletty LlwydStay, 2.2 km from Llanberis, just outside the parkHikes and fells
FronwydyrStay, 3.2 km from LlanberisHikes and fells
Tyn-Yr-Onnen Farm & CampsiteStay, 4.6 km from Llanberis, just outside the parkCamping
Snowdonia Parc CampsiteStay, 5.2 km from Llanberis, just outside the parkCamping

Food and drink nearby

Within 8 km, best first
Pete's Eatsin Llanberis, just outside the parkFood and pubs
Kyffin12 km from Llanberis, just outside the parkFood and pubs
Spice of Llanberisin Llanberis, just outside the parkFood and pubs
Georgio'sin Llanberis, just outside the parkFood and pubs

If it rains

Within 8 km, best first
Penrhyn CastleGrade I listed, 12 km from Llanberis, just outside the parkHistory and heritage
Welsh Slate MuseumGrade I listed, in Llanberis, just outside the parkHistory and heritage
Storiel12 km from Llanberis, just outside the parkHistory and heritage
Snowdon Mountain Railway Cinemain LlanberisRainy day