ATHENS, POP. 12,797
Start your day in this East Texas town with a visit to the Texas Freshwater Fisheries Center, home to a largemouth bass hatchery, fishing pond, walking trails, water wildlife displays, and a museum dedicated to fishing ephemera. After taking in the Dive Show at the underwater aquarium, try your own hand at scuba diving at Athens Scuba Park, where clear waters fill an old brick quarry. Among the sunken treasures to explore: Ray Price’s old tour bus. The park also offers swimming, snorkeling, and kayaking. —Ashley Slayton
SONORA, POP. 2,762
Locals tout the Caverns of Sonora, their subterranean National Natural Landmark, as the most beautiful show cave in Texas. They aren’t exaggerating. See for yourself on a 1-hour-and-45-minute, nearly 2-mile tour of its crystal “palace.” Or sign up for…