On the afternoon of the 2nd day in Dublin took the DART line train south to Bray.
This is one of those lovely railway lines that for much of its route goes along the coastline, with great views over Dublin bay out of the carriage windows.
Bray is a little sea side town, with a bit of a pebbly beach:
But there are great walks along the coast - if you have time you can walk the 6 km to the next station at Greystones round this headland:
PYC junior learn to sail classes
6 hours ago