Explore one of Mid Wales' finest wildflower meadows with accessible walking trails, boardwalks through stunted forests, and abundant wildlife across changing seasons.

Cors y Llyn National Nature Reserve near Builth Wells offers visitors a peaceful outdoor experience centred around one of the best wildflower meadows in Mid Wales. The reserve's name means 'bog of the lake' and its fascinating landscape was shaped by glaciers during the last Ice Age, creating rich habitats that support over 100 flowering plant species including rare orchids and insectivorous plants. The accessible 0.7-mile circular walking trail features mesh-covered paths and boardwalks, making it suitable for families with pushchairs and wheelchairs. Visitors can experience the stunning Scandinavian-style dwarf pine forest, where trees over 100 years old remain just a few feet tall due to waterlogged peat, and explore swampy woodlands teeming with life. The reserve comes alive with colour across all seasons. Spring brings cuckoo flowers and heath-spotted orchids, while summer showcases a wealth of wildflowers attracting colourful butterflies, damselflies and dragonflies. Birdwatchers can spot pied flycatchers, redstarts and wood warblers in summer, with woodcock and snipe visiting in winter. The diverse habitats support amphibians, reptiles and abundant insect life throughout the year. With free parking, free entry, dog-friendly access and a level, well-maintained trail with seating and passing places, Cors y Llyn is ideal for families of all ages and abilities seeking an outdoor nature experience in a protected landscape.

Venue Details

What this place offers

Toilets

Public transport nearby

Accessible toilets

Free WiFi

Baby changing facilities

Food available

On-site parking

🐕Dog-friendly

Parking nearby

Pushchair friendly

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steve cee

3 months ago

First, it's not signposted from the main road, so use map or satnav. You have to go through a farmyard, so you're not lost. Very small car park. Fantastic walk, wooden boards most of the way, great accessibility. Peaceful, lovely scenery. Not many other people there.

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Andrew Coles

3 months ago

What a wonderful find! Quiet, peaceful and interesting short walk around the reserve.

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B Sherwood

6 months ago

A quick and circular walk that is ideal for younger children when you want to get out of the house! Lots of interesting plants and trees!

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Devonmaid

a year ago

I had been looking for this place after coming on a university field trip some 20 years earlier. My revisit didn’t disappoint! So peaceful, even though it was a sunny weekend, not another soul around. Just our family. Fascinating place, for those who like peace and quiet and nature loving. Only a few benches available to sit and ponder life. Personally I would say suitable for little children out of the pushchair, as the biodiversity is so sensitive and there not much for them to do.

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Rebecca Michael

3 years ago

Lovely little walk around this bog nature reserve. Make sure you stay on the path but be careful as there was a board that has rotted and broke under my foot. My dog was off lead as Ilwe were the only ones here. There is a bigger walk which goes through fields with sheep but didn't go through myself as didn't want to startle any sheep. Wish there was more information about the different plants etc but still had a great time. Free parking, enough for about 4/5 cars.

Reviews last updated: 7 October 2026