This temple to the city’s renowned stout—a product that’s helped sustain Ireland’s economy for centuries—is the country’s star tourist attraction. The property, originally built in 1908 to house fermentation tanks, bears little resemblance today to the original operation. Focused around a modern steel-and-glass building that looks like a giant pint glass, it’s filled with exhibit halls, tasting areas, and touring crowds. But it’s 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.