This temple to the city’s renowned stout—a product that’s helped sustain Ireland’s economy for centuries—is one of the country’s star tourist attractions. The property, originally built in 1908 to house fermentation tanks, bears little resemblance today to the original operation. The modern steel-and-glass building (which looks like a giant pint glass) is filled with exhibit halls, tasting areas, and touring crowds. This is a must for any Guinness fan who’s interested in the brew’s provenance. Time your visit so you end up at the rooftop Gravity Bar at sunset—the panoramic views, accompanied by a fresh-pulled pint, are showstoppers.