Most countries we travel in on tour operate on the currency of Euros. The best way to get Euros is to bring a debit or credit card that doesn’t charge you to use it in Europe or has no ATM withdrawal fees. Use the ATM machine at the airport or any bank you see to get some cash out. Be sure to notify your bank that you will be traveling before leaving the US or else the bank is likely to freeze your card after your first foreign transaction. We do not recommend bringing a ton of cash for safety reasons. Pick pocketing is common throughout Europe, especially on the trains and during peak tourism seasons in the big cities.