Despite baseball's unofficial theme song, peanuts and crackerjacks were replacements for the original, mid-1850s snacks of heavily salted licorice and wooden chewin' slabs. Keep your family traditions classic, but not too classic, with today's Groupon: for $20, you get four tickets to tour Busch Stadium (up to a $40 value, depending on age or military status). Children 3 and younger are free.

With panoramic views of downtown and the St. Louis Gateway Arch looming in the background like a giant croquet wicket, baseball enthusiasts and Cardinals fans can visit sites they don't normally see on game day. During the tour, fans will swing through the Redbird Club—a spacious, closed-in section of the ballpark with some of the best views available—as well as the press box, where the world first learned that Mark McGwire's goatee was actually a toupee. Visitors get to check out other notable spots in the stadium, including the Cardinals dugout, Trinket City, and the secret fifth base. While tours are usually available daily, visitors are strongly encouraged to call ahead.