For U.S. citizens traveling to the Canadian side of Niagara Falls in 2026, a valid U.S. Passport, Passport Card, or Enhanced Driver's License (EDL) is required for entry. Children under 16 traveling by land or sea can often use an original birth certificate. If you are a U.S. Green Card holder, you must carry your physical Green Card and a valid passport from your country of citizenship. International travelers from other countries may require a Visitor Visa or an Electronic Travel Authorization (eTA). It is highly recommended to check the official Canada Border Services Agency (CBSA) website before your trip, as documentation requirements can vary based on your nationality and the specific bridge you use to cross the border.