The currency of Peru is the Nuevo Sol. There are 100 centavos to each sol. At the time of writing USD $1.00 was equal to S/.2.80. There are a number of automatic teller machines that take credit cards and there are numerous "Casas de Cambio" where Travelers Checks may be cashed or US Cash may be changed. There are also ATM that excepts Eurocards, which are Banco Latino and Banco del Sur. It is useful to arrive with American dollars. When changing money, be careful that you are not distracted with anything to make you lose count of what you have been given.