Cartagena City Tour. Experience all of Cartagena’s historical highlights on a comprehensive 6-hour guided tour of Colombia’s most vibrant city. Immerse yourself in the Caribbean color and cultural flair of the city as you visit revered museums, iconic fortresses and impressive monuments. Admire the astonishing colonial architecture of the Torre de Reloj, the famous clock tower, and explore the glittering exhibitions of the Museum of Gold, the entrance fee to which is included. Book this Tour and Save 10%! Cartagena City Tour.