The square was originally the site of the Royal Treasury, where taxes on goods arriving in the port were collected.
The Cartagena Mayor's Office (Alcaldía de Cartagena) occupies the colonial building that formerly served as the Custom House.
Archaeological excavations in the square have revealed foundations of structures dating back to the city's 16th-century founding.
The square's name, 'Aduana', translates to 'Customs House' in English.
The surrounding architecture reflects a blend of late colonial and early republican styles common in Cartagena's political center.
Plaza de la Aduana is the largest and oldest square in Cartagena's Walled City. It historically served as the administrative hub for the Spanish colonial government. The square is anchored by a bronze statue of Christopher Columbus, surrounded by colonial-era mansions. The building on the eastern side, the former Customs House, now houses the Cartagena Mayor's Office. Historically known as the Plaza de la Contaduría, it was renamed to reflect its function as the tax collection point for the Spanish Empire. Its wide, open space design stands in contrast to the narrow, labyrinthine streets of the surrounding historic district.
Position yourself in the center of the square to capture the statue of Columbus with the colorful colonial architecture of the Mayor's office in the background.
Visit during the early morning to see the square before the heat and peak tourist crowds arrive.
Look up at the balconies of the surrounding mansions to observe the distinct colonial-era woodwork.
Combine your visit with a walk through the neighboring Plaza de los Coches.
Do not purchase 'free' cultural gifts or trinkets from aggressive street vendors who will later demand payment.
Respect the office space of the Mayor's building; maintain a quiet tone when near entrances.