Leave your rental car at the causeway and wear sneakers with serious grip; the polished limestone alleys are literal death traps. Skip the souvenir shops in the lower village and power through the steep incline to the Upper Town. The crumbling Byzantine ruins and unfiltered sea views justify the cardio. Budget three hours for the maze-like trek. If you finish without jelly legs, reward yourself with a cold local beer at a cliffside tavern.

