Take a long, leisurely walk from one beautiful harbor town to the next by a trail along the gorgeous cliffs that hug the Irish seas.
From Dublin, you can get to Bray via Dart train. Once you arrive in Bray, walk towards the sea along the Bray promenade. Continue along the promenade going south. You'll walk along the beach for a few minutes before reaching the blazed trail. Essentially, you'll follow this trail until you reach the town of Greystones. Along the trail, there are side routes that take you down to secluded beaches. They're great spots for picnics and romantic getaways. There were several rainbows when I walked this trail. I even witnessed my first double rainbow here!
In Greystones, there are some sweet spots you can check out. Several restaurants and stores line the streets of this town. My favorite is The Happy Pear. It's a quaint vegan/vegetarian restaurant with a fresh market connected to it. The shops and restaurants tend to close around 6-7 PM.
To get back to Bray or Dublin, hop back on the Dart!