I've gotten a few Northern comp singles to anywhere on their network. Travelling from Liverpool; can anyone please suggest towns/cities worth a visit? Even better if there's a TPE service (Advance tickets) available to make the return journey but if necessary I can use one comp ticket each way. Journey time is no object providing it can be reached by early afternoon. 
So far I've visited York, Leeds, Bradford, Lincoln, Sheff & Notts and I'm already considering a trip to Hull & Scarborough.
I'd like to get my money's worth out of these tickets, so can anyone please recommend somewhere worth a visit that's not in the immediate vicinity of Liverpool/Manchester? Anything like museums/art galleries/zoos/war memorials/ NatGeo walking routes/anything remotely different from the ordinary counts.
Cheers!

So far I've visited York, Leeds, Bradford, Lincoln, Sheff & Notts and I'm already considering a trip to Hull & Scarborough.
I'd like to get my money's worth out of these tickets, so can anyone please recommend somewhere worth a visit that's not in the immediate vicinity of Liverpool/Manchester? Anything like museums/art galleries/zoos/war memorials/ NatGeo walking routes/anything remotely different from the ordinary counts.
Cheers!