Did you know there are European countries that don't use the euro? Of the 27 nations that make up the European Union (EU), 21 use the euro as their official currency, in the region known as the Eurozone. If a financial crisis affects the euro, the six European countries that don't use the euro will be spared from the brunt of it. Below, explore the non-Eurozone EU member countries and all they have to offer—beyond just a different coin. Currency: Czech Koruna (CZK) (1 CZK = 0.047 USD)Where to stay: