Lighthouse lovers should head to Martha’s Vineyard’s historic Cape Poge Lighthouse or Cape May Lighthouse in New Jersey. History buffs will love Gettysburg, where you can stand on the battlefield that changed the course of the American Civil War. Keep an eye out for nesting loggerhead turtles as you explore the 13 isles that make up the town of Marathon in the Florida Keys. Whether you're craving a break from the busy city or just trying to travel somewhere affordable and quiet, small towns across the U.S. offer plenty of charm, elbow room, and prices that won't break the bank. Along the Atlantic, that looks like old-timey New England fishing villages, North Carolina mountain towns along the Appalachian Trail, and towns comprising more than a dozen islands in the Florida Keys. Looking for a new vacation spot or place to call home? To help narrow your search, we've compiled a list of the best small East Coast towns.…