Barnes Hospital, also known as Manchester Convalescent Home, in Cheadle, Greater Manchester, England. The building, completed in 1875, is a noted example of Victorian Gothic Revival
Source: Reddit
This Manchester convalescent home was closed in 1999 and left in neglect; but, despite that, it was first sold to a realty company in 2001 and then resold to a development company for 12 million euro who planned a 128 residential unit but they never followed through on it. Then in 2012, it was sold once again to another development company who actually did start construction in 2015 of converting the hospital into apartments. On two occasions, the place was used for filming -- once in 1974 for the horror film "Let Sleeping Corpses Lie" and again in 2005, it was featured on the show "Most Haunted Live!"