A Schengen visa is a short-term visa that allows you to travel to 26 European countries that are part of the Schengen Area. With this single visa, you can visit multiple countries without needing separate visas for each one. It is mainly used for tourism, business trips, or visiting family and friends. You can stay for up to 90 days within a 180-day period. The Schengen visa makes travel easier and more convenient for people who want to explore different European countries in one trip.