Roadside America for Garmin (Mac only) [Download] Largest and Smallest claims to fame, from the tiniest church to the biggest Twine Ball. Mystery spots, gravity hills, show caves and mines, natural and unnatural wonders. Unusual landmarks and little museums along Route 66, the "Mother Road". Entertain friends and family using your GPS device and RoadsideAmerica.com Attractions & Oddities with a trip to see the strange, weird and amazing! Compatibility: Garmin nvi series, Dakota, Oregon, Dezl and Garmin zumo series