Western heritage roams freely in Fort Worth, where cattle drives are a twice- daily occurrence. Board the Tarantula Train, named for the spidery look of an early map of its route, to travel from the Grapevine Vintage Railroad to the Stockyards National Historic District. If you don't have a hankering for cowboy culture, enjoy diverse restaurants, cultural institutions and sporting events. Entertaining the kids is easy, courtesy of Six Flags Over Texas, the Noble Planetarium and Museum of Science and History.