New hotels and restaurants make the walled city a desirable place to stay, and the formerly down-at-the-heels Getsemaní neighborhood attracts those seeking a bohemian buzz. The historic center is a small section of Cartagena; many hotels are in the Bocagrande district, an elongated peninsula where high-rise hotels overlook a long, gray-sand beach.When it was founded in 1533 by Spanish conquistador Pedro de Heredia, Cartagena was the only port on the South American mainland. Gold and silver looted from indigenous peoples passed through here en route to Spain and attracted pirates, including Sir Francis Drake, who in 1586 torched 200 buildings. Cartagena's walls protected the city's riches as well as the New World's most important African slave market.