Porto - must do , see etc

[SpeckledyHen]

Off to Porto on Monday for 4 nights. Any recommendations for places to see , visit, trips etc and good places to eat for fish and ice cream 🍦?
Thanks

The help I got on here before a trip to Lisbon was brilliant.
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Anything?

I loved Porto. Would recommend a tuk-tuk ride, that was great for seeing the place. The bookshop called Livraria lello (Harry potter inspiration) is worth visiting. We got a tour bus and stopped at the beach. Crossing the river to the new town is beautiful because the view from the top of the hill back to porto is lovely. There's a quirky museum called world of discoveries ( which does boat rides inside)that was an unexpectedly good find.

Thank you LB