A seaside town about half an hour outside the city center of Dublin, Ireland's most famous denizens tend to have second homes here — Bono's U2 is one person you might find wandering around the streets. Despite it's A-list residents, the vibe of this town is low-key, with plenty of pubs that are ideal for having a long lunch and a beer while your toddler makes friends with other toddlers whose parents have the exact same idea. Long seaside walks are a perfect prenap activity, and the castle in the city center (complete with actors playing the parts of medieval town residents), will captivate any curious kid. Nearby seaside cities like Dún Laoghaire let you escape the bustle of Dublin and experience the country in a quieter way.