Chirk Castle is a Grade I listed castle located in Chirk, Wrexham County Borough, Wales. It is now owned and run by the National Trust.
Alyn Valley Woods and Alyn Gorge Caves is a Site of Special Scientific Interest on the border of Flintshire and Denbighshire in north Wales. Most of the site is also designated as the Alyn Valley Woods Special Area of Conservation and the southern part includes Loggerheads Country Park. The SSSI has an area of 190.3 hectares while the SAC covers 168.3 hectares.
Buckley Claypits and Commons is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales. It is an important reserve for the great crested newt.
Caeau Pen-y-coed is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Chwarel Pant Glas is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Coed Nant Mawr is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales. It is near to the town of Denbigh.
Coed y Gopa is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Connah's Quay Ponds and Woodland is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Crest Mawr Wood is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Graig Fawr is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales, now in Denbighshire. It is 153 metres high and located near Prestatyn. It is owned by the National Trust.
Graig, Llanarmon-yn-Ial is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Hanmer Mere is a natural lake and Site of Special Scientific Interest in Wrexham County Borough, Wales. The village of Hanmer is at the northern end of the lake. The lake is 18 hectares in extent.
Hendre Bach is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Llwyn is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales. It consists of two blocks of alder woodland at grid reference SJ 083 643 and SJ 082 649, about 2 miles (3 km) south-east of Denbigh and just north of the village of Llanrhaeadr. The site is on the floodplain of the Rivers Clywedog and Clwyd, and includes peat beds and swamps. It was notified in 1983 and 2001. Part of the site, some 9 acres (3.6 ha), is owned by the Woodland Trust and operated as a nature reserve.
Llyn Bedydd is a small lake in Wrexham County Borough, in northeastern Wales, near the border with England. It is 7 kilometres (4.3 mi) south west of Whitchurch. The lake and the surrounding woodland are designated as a Site of Special Scientific Interest.
Maes Hiraddug is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales.
Maes y Grug is a Site of Special Scientific Interest at Alltami in the preserved county of Clwyd, north Wales.
Stryt Las a'r Hafod is a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales, and specifically in Wrexham County Borough. It includes the parks of Bonc yr Hafod and Stryt Las Park.
Marford Quarry is a quarry and a Site of Special Scientific Interest in the preserved county of Clwyd, north Wales. It is managed by the North Wales Wildlife Trust.
