On 14 June 1985, the cruise ship “MS Princess Marie-Astrid”, anchored on the Schengen platform, signed the Schengen Agreement on the abolition of customs controls, which came into force on 26 March 1995. The Schengen Agreement is currently ratified by 25 European countries constituting the `Schengen Area`. The Schengen Agreement was signed independently of the European Union, partly because of the lack of consensus among EU Member States on whether the EU is responsible for removing border controls and, secondly, because those who were willing to implement the idea were not waiting for others (at that time , there was no enhanced cooperation mechanism). The agreement provided for a harmonization of visa policy allowing people in border areas to cross the borders of fixed checkpoints, replace passport controls with visual surveillance of vehicles at reduced speeds, and carry out vehicle checks allowing vehicles to cross borders without stopping.  Originally, the Schengen treaties and the rules adopted between them worked independently of the European Union. However, in 1999, the Treaty of Amsterdam introduced them into EU law, while they provided exemptions for the only two EU Member States that had remained outside the territory: Ireland and the United Kingdom (which withdrew from the EU in 2020). Schengen is now a central element of EU law and all EU Member States that have not yet joined the Schengen area are legally obliged to do so if technical requirements are met. Several non-EU countries are included in this area.  On 14 June 1985, the Federal Republic of Germany, France, Belgium, Luxembourg and the Netherlands signed the Schengen Agreement on the phasing out of controls at their common borders. The agreement is named after the small town of Luxembourg, on the border with France and Germany, where it was signed. On the Esplanade de la Moselle, three steel steles recall the signing of the Schengen Agreements in 1985 and 1990. The wine village of Schengen was chosen for the signing of these agreements because of its geographical location on the border with France, Germany and the Benelux Economic Union (i.e. the first five signatories of the protocol).
In another case, the visa application resulting from the Schengen agreements corresponds to any visa procedure. You apply, send your passport and then receive a stamp if you are approved. However, they must meet certain criteria and requirements in order to qualify for a visa under the Schengen Agreement. One of the most remarkable requirements is Schengen visa insurance. The Common Visa Policy on the Schengen area is defined by the European Union and applies to the Schengen area. It allows nationals of certain countries to enter the Schengen area without a visa, visa, air, land or sea, visa- for up to 90 days in a 180-day period, setting out the criteria that others must meet during similar visits to the Schengen States.