Cartagena is Colombia's vivacious Caribbean jewel. The old town is encircled by a magnificent 13km-long stone wall, which has protected its inhabitants since 1796. Inside, smartly painted houses in pastel hues sport polished wooden balconies, bougainvillaea blossom and intricate door knockers. In the adjacent, up-and-coming Getsemani neighbourhood, winding passageways lead to Plaza de la Trinidad, a square presided over by a picturesque 17th-century church, where locals meet to play cards and children hone their football skills. While away hours exploring the cobbled streets, stopping to sample the city's seriously delicious street food along the way.