Ireland's all-dominating brewer -- founded by Arthur Guinness in 1759 and at one time the largest stout-producing brewery in the world -- spans a 60-acre spread west of Christ Church Cathedral. Not surprisingly, it's the most popular tourist destination in town -- after all, the Irish national drink is Guinness stout, a dark brew made with roasted malt. The brewery itself is closed to the public, but the Guinness Storehouse is a spectacular attraction, designed to woo you with the wonders of the "dark stuff." In a 1904, cast-iron-and-brick warehouse, the museum display covers six floors built around a huge central glass atrium. Beneath the glass floor of the lobby you can see Arthur Guinness's original lease on the site, for a whopping 9,000 years. The exhibition elucidates the brewing process and its history, with antique presses and vats, a look at bottle and can design through the ages, a history of the Guinness family, and a fascinating archive of Guinness advertisements. You might think it's all a bit much (it's only a drink, after all), and parts of the exhibit do feel a little over-the-top. The star attraction is undoubtedly the top-floor Gravity Bar, with 360-degree floor-to-ceiling glass walls that offer a nonpareil view out over the city at sunset while you sip your free pint. One of the bar's first clients was one William Jefferson Clinton. The funky Guinness Shop on the ground floor is full of lifestyle merchandise associated with the "black stuff." COST: EUR13.50.