When visiting Cartagena de Indias, a must-do attraction is walking up a huge ramp to explore the Castillo San Felipe de Barajas. This fortress played such an essential role in the city’s defense since it was built by the Spanish beginning in 1536. One word of caution: it is hot. The thick walls intensify Cartagena’s average high temperature of 88° Fahrenheit. The only respites are a few tunnels. But the perspiration and admission charge are worth the historic experience.
