Ireland is laced by little lanes that wander the countryside and hug the filigreed coasts. Roads are rarely even two lanes wide, and frequents stops for tractors, walkers and flocks of sheep are just part of the charm. In fact, you wouldn't want to drive fast and miss something worth seeing. You feel you're at the end of the world in County Donegal where Atlantic winds scour the ancient rocks. In County Mayo's Achill Island, the winding Atlantic Drive takes you back in time as you leave civilization behind and pass centuries-old stone towers used to spot marauding Vikings.