Goose Island Brewhouse
This Chicago-based company was one of the first foreign brands to make headway into Korea's emerging craft beer scene, and their Gangnam location is their mothership. It's an ultra-modern, immaculate complex with myriad beers on tap and a full food menu featuring Western pub favorites such as pork ribs and Buffalo wings. It also houses a brewery with stainless steel tanks, tubes, and valves visible right behind the long bar. The net result is a shiny piece of the United States in the midst of Seoul, so if you're homesick, perhaps this will cure it. Just don't don't expect too much in the way of service.