Wales is one of the great urbex destinations in Britain — a country shaped by the slate and coal industries that roofed and powered Victorian England, whose abandoned quarries, collieries and country houses are among the most dramatically beautiful derelict sites in the UK. Here are 5 of the best abandoned places in Wales, selected from our Abandoned Places Map UK — 640+ GPS locations across England, Scotland, Wales and Ireland.
Why Wales Is One of the Best Countries in the UK for Urban Exploration
Wales concentrates two centuries of heavy industrial heritage — slate quarrying in the north, coal and iron in the south — into a landscape of extraordinary natural beauty. The industrial ruins sit in mountain cwms, coastal headlands and valley floors where the rivers that powered the mills still run. South Wales' abandoned colliery infrastructure and North Wales' slate quarry landscape are unmatched in Britain for the combination of industrial scale and dramatic scenery.
1. Dinorwic Slate Quarry – Llanberis, Gwynedd — 700 Acres, Second Largest Slate Quarry in the World, 3,000 Workers, Closed 1969 (Known Location)
Dinorwic Quarry between Llanberis and Dinorwig was the second largest opencast slate producer in the world at its Victorian peak — 700 acres of terraced mountainside employing over 3,000 men and exporting Welsh slate across Europe and North America. Closed in 1969, the vast terraced quarry faces, ruined incline railways and abandoned quarry buildings remain scattered across the Snowdonia mountainside above Llyn Padarn. The National Slate Museum opened in the original Victorian workshops in 1972. One of the most dramatically scaled abandoned industrial sites in Wales.
🔗 Learn more: Wikipedia – Dinorwic Quarry
2. Kinmel Hall – Abergele, Conwy — Largest Surviving Country House in Wales, 52 Bedrooms, 60 Servants' Quarters, Category I Listed, Decaying Since the 1990s (Known Location)
Kinmel Hall in Conwy is the largest surviving country house in Wales — a vast Jacobean Revival mansion built in 1874 with 52 bedrooms and accommodation for 60 servants, set in extensive parkland above the North Wales coast. Used as a military hospital in both World Wars and a school in the post-war period, the hall has been in progressive decay since the 1990s when it was abandoned by its last owner. Category I listed, it is considered one of Wales' most at-risk heritage buildings. The sheer scale of the mansion, the ornate stone facade and the decay spreading through the vast interior rooms make Kinmel one of the most extraordinary abandoned country houses in Britain.
🔗 Also read: Top 5 Best Abandoned Places in the UK →
3. Abandoned South Wales Colliery – 19th-20th Century Pit Complex, Winding Tower Still Standing Above the Valley, Pithead Baths with Original Locker Bays Intact, Rhondda or Cynon Valley (Exclusively on Our Map)
A 19th-20th century South Wales colliery in the Rhondda or Cynon Valley — the original winding tower still standing above the spoil heap, the pithead baths building with its original locker bays where miners changed before and after their shift and the lamp room still equipped with period Davy lamp fittings. South Wales' coalfield powered the Royal Navy's steam fleet and exported coal across the world for over a century; the closures of the 1980s-1990s left extraordinary mining heritage throughout the valley communities. One of the most historically significant and most atmospherically Welsh abandoned places in the country. Discover its exact location on our Wales Urbex Map.
4. Abandoned Welsh Country House – Georgian to Victorian Mansion, Grand Ballroom with Ornate Plasterwork Ceiling, Servants' Wing and Stable Block Intact, Mid Wales (Exclusively on Our Map)
A Georgian-Victorian country house in mid Wales — the original ballroom with its ornate plasterwork ceiling still largely intact, the servants' wing with its original bells and call board and the stable block still standing in the overgrown parkland. The house served as a convalescent home during WWI then fell progressively into disuse after WWII when death duties and estate costs made it unviable. One of the most atmospherically layered and most photographically dramatic abandoned country houses in Wales. GPS coordinates available with our Wales Urbex Map.
5. Abandoned North Wales Victorian Slate Mill – 1870s-1900s Slate Dressing Mill, Original Saw Frames and Splitting Tables Still Mounted, Underground Water Channel Still Flowing, Gwynedd (Exclusively on Our Map)
An 1870s-1900s slate dressing mill in Gwynedd — the original circular saw frames still mounted on their cast-iron stands, the splitting tables where quarrymen shaped roofing slates by hand and the underground water channel that powered the machinery still carrying water through the mill floor. The mill processed raw slate from the mountain quarries into finished roofing products; when production ended, the machinery was left in place. One of the most technically fascinating and most completely equipped abandoned industrial places in Wales. Included in our exclusive Wales map.
Safety Tips
- Quarry hazards: North Wales quarry sites have unfenced drops and unstable slate tips — always stay on established paths and never approach quarry edges
- Mine shafts: South Wales coalfield has thousands of capped and uncapped shafts — never approach ground openings in former mining areas
- Never explore alone — always bring at least one other person
The urbex code: "Take nothing but photographs, leave nothing but footprints."
❓ FAQ
What is the most famous abandoned place in Wales?
Dinorwic Slate Quarry near Llanberis — the second largest opencast slate quarry in the world, employing over 3,000 men across 700 Snowdonia acres. Closed 1969; the National Slate Museum occupies the original Victorian workshops.
What is Kinmel Hall?
The largest surviving country house in Wales — a Jacobean Revival mansion built in 1874 with 52 bedrooms and 60 servants' quarters near Abergele in Conwy. Category I listed and considered one of Wales' most at-risk heritage buildings, it has been in progressive decay since the 1990s.
Why did the South Wales coalfield close?
South Wales' deep coal seams had powered the Royal Navy and global coal exports for over a century. The 1984-85 miners' strike and the subsequent National Coal Board rationalisation programme closed virtually all remaining South Wales pits within a decade, ending a way of life that had defined the valley communities for generations.
🎯 Summary
Wales' abandoned places range from the second-largest slate quarry in the world to the largest surviving country house in Wales with 52 bedrooms decaying since the 1990s and Victorian slate mills with machinery still mounted on the original stands. Each of these 5 derelict buildings in Wales captures a different layer of a country shaped by slate, coal and the sea.
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