page_title: European integration
section_title: Schengen zone
hierarchical_section_title: European integration / European Union / Social and political integration / Schengen zone
context_page_description: European integration is the process of industrial, economic, political, legal, social and cultural integration of states wholly or partially in Europe or nearby. European integration has primarily come about through the European Union and its policies.
context_section_description: The main purpose of the establishment of the Schengen Agreement is the abolition of physical borders among European countries. A total of 30 states, including 26 European Union states (all except Ireland, which is part of the Common travel area with the United Kingdom) and four non-EU members (Iceland, Liechtenstein, Norway, and Switzerland), are subject to the Schengen rules. Its provisions have already been implemented by 26 states, leaving just Bulgaria, Croatia, Cyprus, and Romania to do so among signatory states.
  Further, Monaco, San Marino and Vatican City are de facto members.
caption: Schengen Agreement   Full Schengen EU members  Non-EU Schengen members  Future members  Cooperating countries