In much of Europe, the only travel document a US or Canadian citizen needs is a passport. (The US Passport Card works only for those driving or cruising to Canada, Mexico, Bermuda, and the Caribbean.)

When traveling through Europe in 2026, the most critical piece of identification you must carry at all times is your valid Passport. For non-EU citizens, including those from the UK, USA, Canada, and Australia, a passport is the only universally recognized form of ID for border crossings and official document checks. Even within the "Schengen Area," where border controls are often invisible, you are legally required to have your passport on your person to prove your legal status if stopped by local authorities. Additionally, in 2026, travelers from visa-exempt countries (like the US) must also have their ETIAS (European Travel Information and Authorisation System) approval linked to their passport. While a driver's license is useful for renting a car or as a secondary form of ID, it is not a substitute for a passport for international travel or proof of citizenship. It is also highly recommended to carry a digital scan or photocopy of your passport's bio-data page stored securely in the cloud, in case the physical document is lost or stolen, as this will significantly expedite the replacement process at your national embassy.