The key documents required for a Hungary Tourist Visa include a duly filled and signed Schengen visa application form, two recently taken passport-sized colour photographs, a valid passport with at least two blank pages, copies of previous visas if any, a cover letter stating the purpose of your visit, confirmed return flight itinerary, hotel booking or proof of accommodation, travel insurance with a minimum coverage of €30,000, bank statements for the last six months, and proof of employment or business ownership. Ensuring all documents are complete and accurate is essential to avoid delays or rejection of your application.