The official currency in Colombia is the Colombian peso (COP). Upon arrival in the country, travelers can exchange their money at the airport or at authorized exchange houses in the cities. It is also possible to use ATMs in major cities, where money can be withdrawn in Colombian pesos using an international debit or credit card. It is important to keep in mind that in some parts of the country, especially in rural areas, there may not be a large number of ATMs or exchange houses, so it is advisable to carry enough cash to cover expenses during the trip.