Guinness is one of the world's most iconic beer brands, with a history stretching back to 1759 when Arthur Guinness signed a 9,000-year lease on the St. James's Gate Brewery in Dublin, Ireland. What began as an ale brewery gradually evolved: from 1799 onwards, under Arthur Guinness Jr., the brewery shifted its focus exclusively to porter and stout production. Today, Guinness is recognised as the world's largest stout brewery, with its beers brewed in over 50 countries and enjoyed in more than 150 markets worldwide. The brand is currently owned by Diageo, a London-based beverage conglomerate. Guinness is defined above all by its mastery of the stout style — dark, roasted, and instantly recognisable with its distinctive creamy white head. The Guinness Draught remains the flagship beer, celebrated for its smooth texture and deep flavour derived from roasted barley. Beyond the classic stout, the brewery has expanded its portfolio with innovations such as Hophouse 13, a Mosaic-hopped golden ale brewed for the Irish market, demonstrating a willingness to explore new styles and hop-forward profiles while staying rooted in its heritage. With over 260 years of brewing history, Guinness has earned a near-mythical status in beer culture worldwide. The St. James's Gate Brewery in Dublin also serves as a major visitor destination, welcoming beer enthusiasts who want to experience the story of this legendary Irish brewery firsthand.