Most guidebooks show only the beaten path. To wander off it, check out www.hamptonlandmarks.com. Chris Epting, a pop-culture historian and the author of James Dean Died Here (Santa Monica Press, $17, www.amazon.com), helps you see more than 1,000 quirky destinations nationwide, such as Wisconsin’s Mustard Museum, the site of the first phone call, and the Winslow, Arizona, corner immortalized in the Eagles song. Next time you plan a trip, you can “Take It Easy.”