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Trefarthen Maenhir

Plan your visit

BirdsWildlifeInsects
Dogs welcome

Visiting this summer

Seasonal nature notes and what to look for now

  • 🐦96+ species recorded in this area — summer evenings are best for activity; watch for Carrion Crow and Oystercatcher
  • Historic character is a year-round quality here — summer brings its own atmosphere to the setting
  • 🐕Dogs welcome — bring water in summer; the site has enough space to find shade on hot days

Good to know

  • 🐕Dogs welcome

Best for

5 activities

Bird watching

Birds — Carrion Crow, Oystercatcher, Herring Gull +93 more · last seen 2025; Birds — Carrion Crow, Oystercatcher, Herring Gull +93 more · last seen 2025

Free

Wildlife

Multi-group wildlife — Birds, Mammals; Multi-group wildlife — Birds, Mammals

Free

Insect spotting

Insects — Helophilus pendulus, Eristalis pertinax, Hairy Yellow-face +54 more · last seen 2026; Insects — Helophilus pendulus, Eristalis pertinax, Hairy Yellow-face +54 more · last seen 2026

Free

Seasonal nature

Plants — Water Screw-moss, Nicholson's Beard-moss, Silver-moss +44 more · last seen 2025; Plants — Water Screw-moss, Nicholson's Beard-moss, Silver-moss +44 more · last seen 2025

Free

Heritage

Historic site

Free

Trails nearby

Within roughly 5 km
🚶

Walking

6 signed routes nearby

Signed route nearby
Isle of Anglesey Coastal PathWalking route200 km
Named routeLength 200 kmRound tripRegional walking route
Llŷn Coastal PathWalking route
Named routeRegional walking route
Hidden Corners of Plas Newydd, Plas NewyddWalking route1.6 km

Enjoy stunning views over the Menai Strait, the Faenol and Snowdonia as you walk around the beautiful grounds of Plas Newydd.

Named routeLength 1.6 kmDuration 00:30Round tripLocal walking route
A Gentle Walk at Plas Newydd, Plas NewyddWalking route1.6 km

This short stroll around the grounds at Plas Newydd is ideal for all ages. Grown-ups can enjoy the backdrop of Snowdonia and the Menai Strait, whilst there's plenty along the way to keep children happy, including the treehouse and adventure playground.

Named routeLength 1.6 kmDuration 00:30Round tripLocal walking route
Wales Coast Path (North Wales) main routeWalking route
Named routeRef WCPNational walking route
🚴

Cycling

47 signed routes nearby

Signed route nearby
Lôn GwyrfaiCycling route
Named routeRef 61Regional cycle route
EuroVelo 2 - Capitals Route - part United Kingdom 1Cycling route
Named routeRef EV2International cycle route
Lôn Las Cymru (North)Cycling route
Named routeRef 8National Cycle Network
Lôn Las CefniCycling route
Named routeLocal cycle route
Route 566Cycling route
Named routeRef 566National Cycle Network
Lôn EifionCycling route
Named route

Wildlife to spot

Photos

Standing stone near Plas Trefarthen

Standing stone near Plas Trefarthen

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