Austria acceded to the Schengen Convention on April 28th 1995.
The Schengen countries are: Belgium, Denmark, Germany, Estonia, Finland, France, Italy, Greece, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Austria, Poland, Portugal, Sweden, Slovakia, Slovenia, Spain, Czech Republic, Hungary, as well as non-EU members Switzerland, Norway, Iceland and Liechtenstein.
EU member states benefit from its membership to the Schengen Area in many ways. The elimination of internal border controls involves increased freedom and security for the citizens and is counterbalanced by more efficient controls at the external borders as well as by other measures at the internal borders, e.g. mobile border surveillance and intensified interconnectivity of police work.
Attention: You need to carry along a travel document (passport) and, if required, visa for crossing internal Schengenborders. Citizens of the European Economic Area (EEA) are also allowed to travel with a valid ID card.