11 of Sunderland's best-kept secrets that even some Mackems have been missing out on

There are some things every Mackem has done - and there are others that everyone from Sunderland should have done, but probably hasn't.
Sunderland's hidden gems and little-known factsSunderland's hidden gems and little-known facts
Sunderland's hidden gems and little-known facts

Here we look at some of Sunderland's hidden gems, well-kept secrets and little-known facts which everyone in Sunderland should experience.