Guinness Storehouse is a real time commitment — fit it in only if it's a priority.
Allow 1.5–2.5 hours.
It's a slick, well-produced tour of how stout is made, with a genuinely lovely 360° city view and a fresh pint at the top. The honest catch: it's essentially a beautifully staged marketing experience, often heaving with crowds, and serious beer people find it thin on substance for the price.