The walled old town — Cartagena's walled city is pure enchantment — a compact grid of streets lined with balconied colonial houses draped in bougainvillea and painted in ochre, cobalt, coral and gold, opening onto plazas with churches, cafés and horse carriages. Wander with no plan, duck into courtyards and boutiques, and climb onto the massive stone ramparts (Las Murallas) for a walk along the walls — the classic thing to do at sunset, with rooftop bars and the Caribbean glowing gold. It's one of the most beautiful old towns anywhere, and simply being in it is the joy.
Getsemaní and the night — Just beyond the walls, the barrio of Getsemaní has transformed from rough to bohemian without losing its soul — its lanes are a gallery of street art and strung umbrellas, and its Plaza de la Trinidad fills every evening with locals, buskers, street food and a joyful crowd. This is where Cartagena's nightlife beats hardest — salsa and champeta clubs, rooftop bars and hostels — with a younger, edgier energy than the polished walled city. Come for the murals by day and the plaza and music by night.
Fortress, walls and pirate history — Cartagena's wealth made it a target, and its defences are monumental — beyond the town walls, the Castillo San Felipe de Barajas is a vast hilltop fortress of ramparts and tunnels, the greatest Spanish fort in the Americas, built to hold off the pirates and navies that besieged the treasure port. Tour its walls and tunnels for the history and the view over the city and bay. Between the town ramparts and the great castle, Cartagena's swashbuckling past is written in stone.
Caribbean beaches, islands and flavours — Cartagena is a Caribbean city, and the sea is close — the city beaches at Bocagrande, and, better, boat trips out to the Rosario Islands and Playa Blanca for white sand and turquoise water. The food is Caribbean-Colombian: fresh fish and ceviche, arroz con coco (coconut rice), patacones (fried plantain), arepas (including the egg-stuffed arepa de huevo), and the fruit the Palenquera women sell in their bright dresses, cooled with a limonada de coco. Eat the seafood, take to the islands, and drink a coconut lemonade or an aguardiente as the night warms up.