If you plan on exchanging money, banks offer the best exchange rates and a smaller commission, but the GWK is the most convenient if you're heading to the train station. The exchange rate is reasonable but the commission is 0.75% with a minimum charge of €3.25 and a maximum of €7.50. Buy or sell foreign currency, cash travellers checks, debit your credit or bank card or send and receive money with Western Union. International calling cards, credit for cell phones and travel insurance also available.