The town of Portobelo is strikingly beautiful with its moss green ruins of Fuerte Santiago, Fuerte San Fernando and with its imposing Customs House through which gold and treasures carried by ships between the Two Worlds in the 16th century have been passed through its walls. Amazing history! A visit of the Casa de la Aduana, built in 1638 to replace an earlier wooden structure is relating this history.  We liked wandering around its walls and noted that there were only one entrance and one exit: yes, this was intentional and meant to reduce thefts! From the second story, we had fabulous view of Portobelo's anchorage and Fuerte San Geronimo.