Firth Brown Medical Centre was once used to treat injured steelworkers but now sits derelict and gathering dust beneath a car park near the former Firth Brown Steels complex on Carlisle Street East.
The site’s history makes it a favourite with so-called urban explorers, who keep the exact location a closely-guarded mystery, and the only way in today is apparently through a small hole.
These are the latest photos of the interior, which were uploaded to the popular Dare To Tread Facebook group following a recent visit, and they reveal the extent of dilapidation.