An interesting observation: the most expensive currency in the world is neither the dollar nor the euro. The Kuwaiti dinar has long held the top spot, with its value nearly three times higher than the US dollar. It is followed by the Bahraini dinar and the Omani rial. Wealthy oil-producing countries of the Persian Gulf are simply on a different level.

But here’s the funny part — the countries with the most expensive currencies and the most convenient passports for travel are actually different players. Kuwait is good, but Singapore, South Korea, and Japan are where the real power lies. Their citizens can travel almost anywhere visa-free. Europeans are also not lagging behind: Germans, French, and Spaniards have access to nearly all countries.

It turns out that having the most expensive currency and having a strong passport are not the same at all. Oil money gives a currency its value, but reputation and economic stability are what truly open borders. Interestingly, Switzerland and the UK fall into both categories: their franc and pound are among the most expensive, and their passports allow travel almost without restrictions. Now that’s balance.