Foreign visitors traveling to Italy, including Bari, Alberobello, Matera, and Ostuni, typically need a valid passport with at least six months of validity. EU citizens do not require a visa for short stays, while non-EU visitors may need a Schengen visa depending on their nationality. It’s advisable to check for any specific vaccination requirements and travel advisories, especially regarding COVID-19, which may affect entry restrictions. Ensure you also have travel insurance that covers health issues and emergencies.