Walk the Great South Wall
The beauty of walking The Great South Wall all the way out to Poolbeg Lighthouse is that it’s very close to the city center. You could literally not be any more in the middle of Dublin Bay than when you walk the Great South Wall. The path is pretty wide, like a promenade. It’s a 4 km walk, and takes between 30 to 40 minutes depending how brisk a pace you decide to walk. When you reach the lighthouse at the end of the pier, you’ll have stunning views no matter which way you look. You also may witness some ships and trawlers coming into the port, and the Eastlink bridge rising for them which is an impressive sight.