Visa is a document issued by a country, giving a certain individual permission to enter the country for a certain period of time and for certain purposes.
Many countries require possession of a valid visa as a condition of entry for foreigners, but there are exceptions. Visas are typically stamped or attached to the recipient's passport.
For more information, go to the following links:
- Can you enter Portugal without a visa?
- What types of visas are?
- What types of visas issued abroad?
- Common to all documentation necessary visas.