Britain is in danger of losing the world’s longest cast iron structure, as Brighton’s Madeira Terrace is added to the Heritage at Risk Register.
The Grade-II listed Victorian monument, stretching 865 metres along the seafront, has been closed to the public since 2012 amid concerns it could collapse.
Its pillars have been degraded by the marine environment, according to Brighton and Hove City Council, which appointed a design team earlier this year to restore it.
Madeira Terrace is among 216 sites which have been added to the Heritage at Risk Register this year, bringing the total to 5,097.
Produced by Historic England, the register records sites which are in particularly poor condition. Being added to the list can help local authorities and communities with pursuing conservation work to restore threatened heritage.
Places at risk include 1,475 buildings and structures, 2,090 archaeological sites, 932 places of worship, 103 registered parks and gardens, 491 conservation areas, three battlefields and three protected wreck sites.
New additions include the Grade I listed Plume Library in Maldon, Essex, which contains more than 7,000 volumes, mostly from the 16th and 17th century, and which is at risk of its ceiling collapsing and possible structural movement and cracking.
The Grade I listed St James’s Gardens cemetery in Liverpool in a former stone quarry has been added to the list in the face of neglect, invasive vegetation and poor conservation repairs.
Meanwhile, 181 historic sites have been removed from the at-risk register this year, having been saved from neglect, decay or inappropriate development.
Duncan Wilson, chief executive of Historic England, said: “It is the varied tapestry of our historic places that helps us define who we are.
“In testing times such as these, heritage can give us a sense of continuity and bring us solace. We also know that investing in historic places can help boost our economic recovery.
“The 181 places rescued from the register this year show us that good progress is being made, but there is still a long way to go.
“Many more historic buildings and places need caring for, financial support, strong partnership-working and community engagement to give them a brighter future.”