Home to Europe's favorite beer, the Storehouse was built in 1904 in the style of Chicago architecture, including the building's core modeled after a giant pint glass large enough to hold 14.2 million pints. Since the 2000 opening of its tourism area, you can learn everything there is to learn about the famous recipe of water, barley, hops, and yeast; you might even get to meet the master-brewer himself The Guinness Archive, Ireland's only public company archive, holds records dating back to a 1759 lease signed by Arthur Guinness, advertising from 1929 to the present, and even 3,500-year old barley grains from King Tut's tomb. Save 10 percent by booking tickets through their official website.