Conference participants may need a Schengen visa to enter Germany. A Schengen visa is a short-stay visa that allows a person to travel to any members of the Schengen Area, per stays up to 90 days for tourism or business purposes. The Schengen visa is the most common visa for Europe. It enables its holder to enter, freely travel within, and leave the Schengen zone from any of the Schengen member countries. There are no border controls within the Schengen Zone.