I just found out that the most expensive currency in the world isn’t the British pound or the euro, but the Kuwaiti dinar—1 unit can be exchanged for $3.26. Next come the Bahraini dinar and the Omani rial, which mainly come from oil-exporting countries.

What’s interesting is that a high currency value doesn’t mean that country is the wealthiest, but rather that it has a currency peg policy—such as Kuwait pegging to a currency basket, Bahrain pegging to the dollar, while the British pound and the euro float based on the market.

When it comes to safety, the Swiss franc is better known as a safe haven. Even though it isn’t the most expensive, it has good stability. The UK and the European Union also have more influence on the global economy. So the most expensive currency doesn’t tell the whole story—the trust in that country’s economy matters more.