Tourist visas are usually obtained before travel, either through an embassy/consulate or through an online visa application system. The requirements for a tourist visa vary from country to country, but they often include a valid passport, proof of sufficient funds for the duration of the trip, and a return ticket or onward travel itinerary. Tourist visas provide individuals with the opportunity to explore new destinations, experience different cultures, and create memorable travel experiences. They play a significant role in promoting global tourism and fostering cross-cultural exchange.