Cartagena

Cartagena's walls, built and expanded by Spain over more than two centuries starting in the 1500s, remain among the most complete surviving colonial fortifications in the Americas — a defensive response to the city's role as a major gold and silver shipping port, which made it an irresistible target. Sir Francis Drake sacked the city in 1586, and a major British siege in 1741 failed against the reinforced walls, driving Spain to keep expanding the fortification system for decades afterward.

Unlike many walled historic centers preserved primarily as tourist sites, Cartagena's Old City remains genuinely lived in — residents occupy the same colorful, balconied colonial buildings that draw visitors, and the streets function as a real neighborhood with shops, churches, and plazas serving daily life alongside the tourism economy, a distinction that gives the city a lived-in texture some more museum-like colonial centers lack.

Castillo San Felipe de Barajas, on a hill just outside the walled city, ranks among the largest fortifications Spain ever built in its American colonies — a maze of tunnels, ramps, and defensive positions designed specifically to repel the kind of assaults that had repeatedly targeted the city, and it never fell to a direct attack despite numerous attempts.

Getsemaní, a neighborhood just outside the main walled Old City, has developed a genuinely different, livelier character — dense with street art, a younger crowd, and a nightlife scene that contrasts with the more polished, upscale walled center, giving Cartagena two distinct atmospheres within a short walk of each other.

The Rosario Islands, an archipelago roughly an hour offshore by boat, give Cartagena genuine Caribbean beach and snorkeling access beyond the historic city itself — a popular day-trip or overnight escape that rounds out a Cartagena visit with the beach component the walled city alone doesn't offer.