A bureau de change is a business whose customers exchange one currency for another. Although originally French, the term bureau de change is widely used throughout Europe, and European travellers can usually easily identify these facilities when in other European countries.Since the adoption of the euro, many exchange offices incorporate its logotype prominently on their signage.The term bureau de change is not used in the United States.Instead, the terms used in the United States and in Canadian English are currency exchange and sometimes money exchange, sometimes with various additions such as foreign, desk, office, counter, service.A bureau de change is often located at a bank, at a travel agent, airport, main railway station or large stores namely, anywhere there is likely to be a market for people needing to convert currency. They are particularly prominent at travel hubs, although currency can be exchanged in many other ways both legally and illegally in other venues.The exchange rates charged at bureaux are generally related to the spot prices available for large interbank transactions, and are adjusted to guarantee a profit. The rate at which a bureau will buy currency differs from that at which it will sell it; for every currency it trades both will be on display, generally in the shop window.The business may also charge a commission on the transaction. Commission is generally charged as a percentage of the amount to be exchanged, or a fixed fee, or both. Some bureaux advertise themselves as commission-free, which mathematically just means they further load their offered exchange rates. As an additional complexity some bureaux offer special deals for customers returning unspent foreign currency after a holiday. Bureaux de change rarely buy or sell coins.