Definitely worth stopping by if in Dublin, although this is more a museum than a brewery. You go on a self-guided tour of the many floors of the store house and learn about the history of Guinness, how it is made, and its advertising campaigns. It was very interesting. About half way through you get a small sample, then a full sized pint when you get to the gravity bar at the top. Also if you like Guinness memorabilia the gift shop has everything you could want.
You can't come to Dublin without a tour of this place right. 5 or 6 floors of information about the history and how they make Ireland's iconic beverage. Culminating in the gravity bar at the top of it all with spectacular views of the city in all directions. The price of admission includes a ticket for one free drink that you can use in one of several bars on the way up or at the top. There is a restaurant and a cafe and also a huge gift shop. You can pay extra to have a guided tour. There are several brands offered and curiously when I ordered a cider for my wife I had to assure the bartender that she had a gluten allergy or he couldn't serve it to me. I'm not sure what that was about but I played along. The Guinness tastes the same, but it was great sipping on it looking out over the city. I'd do it again.
Only ever been through the Guinness precinct in Dublin on a tour bus, but thought that I should give it a rating as the spiritual home of close to my favourite beer, Irish Stout. Will visit one day for the full experience.
Storehouse is Disney for beer. Geared to the masses and well produced. Best pint of Guinness I had was here, but only slightly better than everywhere else in Ireland. It's interesting and even fun, but short on the brewery experience.