Hi Kathleen,
It's great that you're planning on exploring Ireland's cities on foot! I have found a few walks which I think you might like.
Cork City Council has developed a series of 4 self guided walks called
Cork Walks, each with their own theme. The
South Parish Walk takes you along the English Market and Red Abbey,
The City Centre Island Walk goes along Paul Street and Fitzgerald Park, and the
University Walk goes past the Cork Museum.
I hope this helps you plan out the best route! Also, have you seen the
Discovery Trails for Dublin yet? :)
Happy weekend!
Melin