Torre do Príncipe

Torre del Príncipe sits within O Castro, Vigo's largest hilltop park, where the old fortress ruins are framed by manicured gardens and sweeping views over the Vigo estuary. It's the kind of place you stumble into thinking you'll stay 20 minutes and end up lingering for an hour. Head up here to catch one of the best panoramas in the city without much effort — the walk through the park is half the experience.