Yes, a valid passport is absolutely mandatory to visit Victoria Falls, as the site straddles the international border between Zambia and Zimbabwe. Your passport must have at least six months of validity remaining and typically at least two to six blank pages. In addition to a passport, most international visitors (including U.S. and UK citizens) require a visa for both countries. The most efficient option for 2026 travelers is the KAZA UniVisa (approx. $50), which allows you to cross between Zimbabwe and Zambia multiple times over 30 days. This is essential if you want to view the falls from both sides or engage in activities like the Devil's Pool (Zambia) and the rainforest walk (Zimbabwe). You cannot use a driver's license or an ID card; the passport is the only document accepted at the immigration posts at the Victoria Falls Bridge.