For those who are interested in knowing whether a visa is required to travel within the European Union, you should know that if you are looking to stay for a short period of time not exceeding three months in a six-month period in a European Union country, this may mean that you do need one according to the nationality of the person and the regulations of that country.
In any case, it must be borne in mind that citizens of certain countries who visit the European Union for a short time can benefit from a particular regulation that now exists of visas or accelerated procedures in which no visa is required, like autorização de residência no Brasil.
Visas for travel within the European Union: Schengen area
By way of introduction, it is important to emphasise that a group of 25 European countries that have taken the decision to remove all internal border controls are referred to as the Schengen area, which is why travellers can move freely throughout this area without having to show their passports.
This area has been named after the city of Schengen, in Luxembourg, where this agreement was originally signed for the creation of a European area in which it is possible to move freely without borders.
Regarding the 26 countries of the Schengen area are 22 of the 27 countries of the European Union plus four other countries that are not part of the European Union, which are: Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden and Switzerland.
With the Schengen visa the person can travel through any of the countries that are part of this area as long as their visa is valid, although for a maximum time of three months in a period of six months. It is emphasized that it is not necessary to show a particular visa for each country, nor is it required to show the passport when crossing the borders of those countries that make up the Schengen area.
Beyond the above, it will always be necessary for the person to be able to explain the reasons for which they wish to enter the Schengen area, in addition to demonstrating the conditions of their stay. It is also essential that they prove that they have sufficient financial means for their stay and return. Nor must it be a threat to public order, internal security, internal relations or public health in one of the Schengen countries.