Inside a building shaped like a castle (no surprise there) is one of the friendliest bars in metro Denver, a sunken square presided over by tattooed staffers and surrounded by captain's chairs, with high-tops and cozy booths circling the action. The vibe is relaxing and unpretentious, as are the patrons. Snag a 20-ounce personalized mug for $20, good for a lifetime of 20-ounce pours for 16-ounce prices (enjoy them at the sunken bar), and settle in for the night. The fare is simple but tasty, with budget food specials such as 75-cent wings every Thursday and buy-one-get-one-half-off burgers (among the best in town) on Tuesdays. With karaoke, bingo, trivia and chatty regulars of all stripes, you'll never be bored when you storm the Castle.