Quick answer: Three days in Cartagena covers the walled Old City, a Rosario Islands beach day, and the forts and Getsemaní nightlife.
Colombia’s Caribbean jewel mixes colonial colour, beaches and nightlife. Here’s a 3-day plan.
The itinerary, day by day
Day 1 — The walled Old City
Wander the Ciudad Amurallada’s plazas and churches, walk the city walls at sunset, and explore Getsemaní’s street art and buzzing nightlife.
Day 2 — Islands & beaches
Take a boat to the Rosario Islands or Playa Blanca for clear water, snorkeling and a beach lunch.
Day 3 — Forts & views
Visit the Castillo San Felipe fortress and La Popa monastery for views, relax in Bocagrande, and finish with a cooking class or salsa night.
Where to stay & when to go
Stay inside the walled city or in Getsemaní for atmosphere; Bocagrande for high-rise beach hotels. The dry season (December–April) is best. Carry cash and use registered taxis or apps.