Rhodes rewards focused sightseeing when time is short. The Medieval Old Town forms the backdrop for everything else, its walled lanes leading straight to the Palace of the Grand Masters, a fortress-turned-museum that still commands the skyline, and the Street of the Knights, whose stone facades trace the island's Crusader-era past in a single ten-minute walk. Further south, the Lindos Acropolis pairs ancient temple ruins with sweeping Aegean views, a scene distinct enough to justify the day trip on its own. Together these sites move you from medieval fortifications to classical antiquity without wasted detours, making them the smartest use of a brief stay.