For a proper feel of the city, this two-hour walking tour is hard to beat. A local guide leads you past the big-hitters like Trinity College, Dublin Castle and Christ Church, then ducks down lanes to the hidden corners most visitors miss, weaving in history, folklore and a few tall tales along the way. It is an ideal first-morning orientation before you strike out on your own. Wear comfy shoes and bring an umbrella, just in case.