There are impressive old buildings like the opera House and the John Rylands Research Institute and Library. He was a multi millionaire, owning many mills, ( the information acknowledges this was largely built on slavery) but it was his wife (or rather widow) who arranged for this building to be built in his name. It was closed today, but I saw 3 people talking to staff, trying to get in it and scan QR code, in order to get information for a treasure hunt… Research of a sort. You can make an appointment to try next time, perhaps.