An important part of British heritage could disappear because a number of historic sites are crumbling into a state of disrepair.
The warning comes from the Victorian Society which has put together a list of 10 sites under threat in England and Wales. It says most of them need urgent action, before it's too late.
The 10 most at-risk Victorian and Edwardian buildings are:
Wingfield Station, Derbyshire - a small Grade II listed railway station which was closed with the 1960s rail cuts and has fallen into disrepair under private ownership.
Pumphouse, Langton Dock, Bootle, Merseyside - a Grade II listed pumphouse which originally contained a steam engine to operate the locks but has become derelict.
Butterley Spillway, Marsden, West Yorkshire - a Grade II listed spillway that resembles a giant staircase and was designed to allow the release of water during heavy rain. It is the only listed spillway in the UK but is under threat from plans for a concrete replacement.
Ipswich former County Hall - a Grade II building which once boasted wood panelling and stained glass windows, but has been at the mercy of vandals, thieves and squatters since being sold to a private owner, according to the Victorian Society.
Agecroft Cemetery Chapel, Salford - a tall Grade II mortuary chapel with Art Nouveau stained glass windows which was closed and abandoned in the 1980s and now faces a bleak future with no obvious viable use.
Church of St Peter and St Paul, Birch, Essex - a Grade II church which was abandoned 20 years ago and now has rotten wood floors, crumbling stonework and a weathercock which was damaged by a low-flying Chinook.
Mechanics Institute, Swindon - a Grade II* building paid for by rail workers, which contained the UK's first lending library and ran many activities and classes, but which has become prey to vandals and arsonists since it closed in 1986.
Holborn Circus, London - a meeting place of six roads which terminate at a statue of Prince Albert suffered Second World War damage that led to buildings being demolished. There are plans for a layout redesign, but the Victorian Society opposes it.
Hendrefoilan House, near Swansea - a Grade II* house built on the site of a medieval farmhouse, which was used for university accommodation and teaching since the 1960s and is now unused, and is suffering from damp and lead theft.
Waterloo Hotel, Smethwick, West Midlands - a Grade II* pub and hotel which has a restaurant with original grill still in working order and highly decorated ceiling and wall tiles, but is now in a "deplorable" state, according to the Victorian Society.
The Victorian Society published the list after calling on the public to highlight heritage they believed was at risk.
The public responded enthusiastically to our call for threatened buildings. It shows the public cares - but it also shows there are still too many historic buildings at risk, without recognition or protection. Whether the solution is restoration or finding a new use for a building, it always takes money and often a long time. In the meantime it's vital that historic buildings are secured against weather and vandals. We owe it to future generations to ensure such memorable buildings are still around in 100 years.