Whether you are a nature-lover or not, one of the most important things to do in Dublin is to explore Phoenix Park. This sprawling green haven contains huge grassy areas and tree-lines paths. Visit the Dublin Zoo here, which is one of the top things to do in Dublin. It is the largest zoo in all of Ireland and houses all types of exotic animals from around the world. If you’re travelling with kids and looking for a fun-filled family afternoon, Dublin Zoo is the place to go.