Cartagena City Tour: History, Culture and UNESCO World Heritage Sites. Immerse yourself in the captivating history and Caribbean flair of Cartagena on a 4-hour historical tour of the city. Visit all of Cartagena’s significant sites and UNESCO World Heritage-listed structures accompanied by a knowledgeable guide; admire the stolid stature of the Castle of San Felipe; absorb the sacred ambience of San Pedro Claver Church; and gain insight in to the colorful culture of the Colombian area. Book and Save 10%! Cartagena City Tour: History, Culture and UNESCO World Heritage Sites.