By signing the Schengen Agreement in 1995, the government of Belgium joined the European border free area. Entering Belgium on a short-stay visa, you can also travel to the other Schengen member states as well. A total of 26 countries make up the Schengen Area.
There are three categories of Schengen visa
Short stay visa: This visa allows for single or multiple entries and you can stay in the Schengen territory up to 90 days in the validity period of six months.
Long stay visa: This is issued for a period exceeding 90 days and are issued by the countries. The national legislation rules apply here.
Airport transit visa: This is required for people belonging to certain countries.