This is the Todmorden Grammar School building - opened in 1912 and due to be demolished very soon.
It produced two Nobel Prize winners: Prof. Sir John Cockcroft (Physics) and Prof. Sir Geoffrey Wilkinson (Chemistry). It also educated me - with markedly less success.
The building currently houses a Primary School, but a new school is being built on the old Grammar School playing fields. When this is complete, the bulldozers will move in.
The contractors generously agreed to open the doors and let former pupils have a last look around. My Blip show them congregating outside the main entrance (which was only available to teachers in my day).
A sad experience, but lovely to exchange memories with ex-pupils, some known to me but many not.