Sandwiched between Dallas and Fort Worth, the medium-size city of Arlington has become known as a pro sports center and the family playground of the Metroplex. If you're a sports fan, or have kids in tow (or are a kid at heart), it makes a good day trip. If none of those applies, you're probably better off in Arlington's bigger and more important cousins. To get to Arlington, take I-30 from either Dallas or Fort Worth. Plan on it taking you about an hour if traffic's heavy from either city.