Mysha,

Definitely a Dublin song.

Christ Church Cathederal is on the banks of the Liffey, although the view of it is obscured by the Civic Offices built by Dublin Corporation (Local Authority) in the early 1980s on the viking site at Wood Quay.

The Park is the Phoenix Park the main entrance of which would be about a mile away. I#ll have to consult the lyrics about the other place names. I'll post again in a while.