Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Routes
Places to see
United Kingdom
Wales
North Wales
Anglesey

Trewalchmai

Attractions and Places To See around Trewalchmai - Top 20

Attractions and places to see around Trewalchmai include a mix of historical sites, natural landscapes, and man-made structures on the island of Anglesey in North Wales. The area is characterized by its central location, providing access to both local points of interest and wider island attractions. Visitors can explore ancient monuments, tranquil reservoirs, and scenic river paths. Trewalchmai serves as a base for discovering the diverse natural and cultural heritage of Anglesey.

Best attractions and places to see around Trewalchmai

Last updated: May 6, 2026

Llyn Cefni Reservoir and Dam

Highlight • Structure

Llyn Cefni is a reservoir in central Anglesey. It's managed by Welsh Water. It was completed in 1951 and supplies water to most of Anglesey.

Tip by

See rides here

Send to Phone

Save

Afon Cefni is one of the major rivers on the island of Anglesey, Wales. It is 16.9 kilometres long. Its source is near to the village of Capel Coch, before …

Tip by

Save

Sign up now to discover places like this

Get recommendations on the best single tracks, peaks, & plenty of other exciting outdoor places.

Sign up for free

RAF Mona Airfield

Highlight • Historical Site

This location was first used for aviation during the First World War when the Royal Naval Air Service opened an airship base here named Royal Naval Air Station (RNAS) Anglesey …

Tip by

Save

Pont Marquis Bridge
Spanning the Afon Cefni, carrying the Trefdraeth to Llangaffo road, c. 3km ENE of Malltraeth. The bridge, which is Grade II listed, was built in the early …

Tip by

Save

Barclodiad y Gawres is a Neolithic burial chamber that overlooks Porth Trecastell (Cable Bay). It's an example of a cruciform passage burial chamber and is renowned for its decorative stones; …

Tip by

Save

Sign up for free to discover even more attractions around Trewalchmai.

Sign up for free

Already have an account?

Start today with a free account

Your next adventure awaits.

Login or Signup

Popular around Trewalchmai

Hiking around Trewalchmai

Cycling around Trewalchmai

Road Cycling Routes around Trewalchmai

MTB Trails around Trewalchmai

Running Trails around Trewalchmai

Tips from the Community

AWM
February 21, 2026, Llyn Cefni Reservoir and Dam

We visited for the Parkrun, which was cancelled whilst a walkway is fixed (some more weeks, I would expect). You can still access the lake along the disused railway line for part of the way - but not a good surface for running. Then there is a path around the lake with views across the lake and stretches through the woods, lovely, if rather muddy in places following wet weather. In total about 9 km around. Hope to do this again in the Spring with the promise of wild daffodils and perhaps a red squirrel.

0

0

Quiet paths easy cycling crosses deserted railway line still present, which there trying to reopen

0

0

Pont Marquis Bridge Spanning the Afon Cefni, carrying the Trefdraeth to Llangaffo road, c. 3km ENE of Malltraeth. The bridge, which is Grade II listed, was built in the early C19, was named for the Earl of Uxbridge, first Marquis of Anglesey. It gives wonderful scenery over the marsh land and plenty of wildlife.

5

0

There are crossing lights to stop traffic on the A5 when planes are taking off or landing!

0

0

The path is fairly easy to miss if you’re coming along the A5: look for the section of railing by the roadside which marks the entrance. The path itself has some awkward narrow turns where it passes under the A55 but after that it’s wide, smooth and usually clear.

0

0

The only crossing point for the Afon Cefni between the coast and the A5, with great views over the marshes and the straightened channel of the river.

1

0

Afon Cefni is one of the major rivers on the island of Anglesey, Wales. It is 16.9 kilometres long. Its source is near to the village of Capel Coch, before flowing through Bodffordd and into Llyn Cefni in the centre of the island. It continues to run south through the county town of Llangefni

5

0

This location was first used for aviation during the First World War when the Royal Naval Air Service opened an airship base here named Royal Naval Air Station (RNAS) Anglesey (also known as RNAS Bodffordd, RNAS Gwalchmai and RNAS Llangefni). RNAS Anglesey was commissioned on 26 September 1915, when it was operated by 14 Group RNAS, operating SS18, an SS class airship, which was later joined by airships SS22, SS24 and SS25. The station had in a large airship hangar, 120 by 318 feet (37 m × 97 m) long, workshops, hydrogen gas production sheds and accommodation huts. The airships, which could drop bombs, escorted ships and patrolled for enemy submarines in the central section of the Irish Sea between Bardsey Island, Dublin, the Isle of Man and Morecambe Bay. This area includes the approaches to the Port of Liverpool, then one of the busiest ports in the world.

5

0

Frequently Asked Questions

What historical sites can I explore near Trewalchmai?

Trewalchmai and its surroundings offer a rich history. You can visit the ancient Barclodiad y Gawres Neolithic Burial Chamber, known for its decorative stones with spirals and zig-zags. The RAF Mona Airfield also holds historical significance from its use during World War I. Further afield on Anglesey, you can explore the UNESCO World Heritage Site of Beaumaris Castle, the historic Menai Suspension Bridge, or the impressive Bryn Celli Ddu Burial Chamber.

Are there any natural waterways or reservoirs to visit?

Yes, the area features several beautiful waterways. The Llyn Cefni Reservoir and Dam is a significant man-made reservoir in central Anglesey, perfect for picnics. You can also enjoy the scenery around the Stone bridge over the River Cefni, which offers wonderful views over marshland and opportunities for wildlife observation. The Afon Cefni itself is a major river on the island, with parts accessible via cycle paths.

What outdoor activities, like cycling, are available near Trewalchmai?

The area around Trewalchmai is excellent for outdoor activities. You can cycle along the Lon Las Cefni cycle path along the Afon Cefni, which links Llangefni and Malltraeth and passes by the RSPB bird reserve. For more cycling options, explore routes like the 'Llyn Cefni – Llyn Cefni Reservoir and Dam loop from Bodffordd' or the 'Stone bridge over the River Cefni – Afon Cefni River Trail loop from Isle of Anglesey'. You can find more details on these and other cycling routes in the Cycling around Trewalchmai guide.

Are there family-friendly attractions or activities in the Trewalchmai area?

Absolutely! The Llyn Cefni Reservoir and Dam is a great spot for family picnics. The Stone bridge over the River Cefni is also considered family-friendly for enjoying the views and wildlife. Beyond Trewalchmai, Anglesey offers attractions like the Anglesey Sea Zoo and Marine Resource Centre, and Pili Palas Nature World, which are popular with families.

Where can I go for a walk or run near Trewalchmai?

You have several options for walks and runs. The Lon Las Cefni cycle path is also suitable for walking, offering peaceful trails alongside the Afon Cefni. For dedicated running routes, consider the 'Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Isle of Anglesey' or the 'Running loop from Llangristiolus'. More running trails can be found in the Running Trails around Trewalchmai guide. The wider Anglesey Coastal Path also offers extensive walking opportunities.

What is the best time of year to visit attractions around Trewalchmai?

The best time to visit Trewalchmai and Anglesey's attractions generally depends on your preferred activities. Spring and summer (April to September) offer warmer weather, longer daylight hours, and are ideal for outdoor activities like walking, cycling, and visiting coastal areas. This period is also excellent for wildlife spotting, especially seabirds. Autumn can provide beautiful scenery with changing foliage, while winter offers a quieter experience, though some attractions might have reduced opening hours.

Are there opportunities for wildlife spotting near Trewalchmai?

Yes, the natural areas around Trewalchmai are great for wildlife. The marshlands visible from the Stone bridge over the River Cefni are home to various species. The Lon Las Cefni cycle path runs alongside drained marshes where the RSPB bird reserve (Cors Ddyga) is located, offering excellent birdwatching opportunities. Further afield, Cemlyn Bay is famous for its birdlife, and South Stack Lighthouse is a prime spot for observing seabirds like puffins.

What do visitors enjoy most about the attractions near Trewalchmai?

Visitors particularly appreciate the blend of history and natural beauty. They enjoy the tranquil scenery at the Stone bridge over the River Cefni, often stopping to take in the views and observe wildlife. The Llyn Cefni Reservoir is valued for its peaceful picnic spots. The historical significance and unique decorative stones of the Barclodiad y Gawres Neolithic Burial Chamber also leave a lasting impression.

Are there any mountain biking trails in the Trewalchmai area?

Yes, there are mountain biking opportunities. You can find trails like the 'Cefni Forest – Llyn Cefni Reservoir and Dam loop from Isle of Anglesey' which offers an easy ride. For more moderate options, consider the 'Newborough Forest Trail – Llyn Cefni Dam loop from Bodorgan'. Detailed information on these and other routes can be found in the MTB Trails around Trewalchmai guide.

What are some notable natural features on Anglesey easily accessible from Trewalchmai?

From Trewalchmai, you have easy access to many of Anglesey's stunning natural features. The Anglesey Coastal Path, a 125-mile trail, offers spectacular views. Other highlights include the dramatic cliffs and seabirds at South Stack Lighthouse, the beautiful sandy expanse of Newborough Beach and Llanddwyn Island, and the tranquil Cemlyn Bay, known for its birdlife. The Dingle Nature Reserve in Llangefni also provides a peaceful woodland experience.

Are there any unique cultural sites or museums on Anglesey worth visiting from Trewalchmai?

Beyond the immediate Trewalchmai area, Anglesey boasts several unique cultural sites. Oriel Môn in Llangefni is a museum and art gallery dedicated to Anglesey's history and art. You can also visit the National Trust's Plas Newydd House and Gardens, a historic country house, or the Anglesey Transport Museum and Cafe - Tacla Taid for a journey through transportation history.

Are there any dog-friendly attractions or walks near Trewalchmai?

Many of Anglesey's outdoor spaces are dog-friendly. The Llyn Cefni Reservoir area and the paths around the Stone bridge over the River Cefni are generally suitable for walks with dogs on a lead. The Anglesey Coastal Path is largely dog-friendly, though some sections may have restrictions or require dogs to be on leads, especially near livestock or nesting birds. Newborough Beach also welcomes dogs in designated areas.

Most popular routes around Trewalchmai

Hiking around Trewalchmai

Store rating

Get inspired with the komoot mobile app

With a free komoot account, you can easily find, customize, and navigate endless outdoor adventures.

or

Join komoot Now

Store rating

Explore more

Still not found the Highlight you’re looking for? See guides of the top attractions in other regions:

Anglesey Aonb (Ahne Ynys Môn)BodorganRhosyrLlanfihangel YsgeifiogLlangristiolusNewborough Warren And Ynys Llanddwyn National Nature ReserveLlanidanLlanddaniel FabAberffrawBeaumarisLlaneilianRhosybolLlannerch-Y-MeddMechellCylch-Y-GarnLlangoedLlanddyfnanAmlwchMoelfreCwm CadnantLlanfair PwllgwyngyllLlanbadrigHolyheadLlanddonaLlanfaethluBodfforddLlaneugradRhoscolynLlanfair-Mathafarn-EithafPenmynyddTref AlawLlanfachraethValleyTrearddurLlangefniLlanfair-Yn-NeubwllPentraethBodedernMenai BridgeLlanfaelogBryngwranCoedwig Niwbwrch / Newborough Forest

Nearby adventure guides

Things to Do around Bodffordd

background

Get ready to conquer new peaks

Sign up for Free

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy