Walk the massive Savannah track early in the morning to see racehorses training, then hit the George Washington House for the real history. The $30 walking tour is the move here; you actually get into the tunnels and the world's largest collection of 17th-century cannons. Skip the midday sun—there's zero shade. Spend two hours exploring the red-brick barracks before grabbing a Banks beer nearby. It is way more than just old buildings.
