What is a Visa

A visa is official permission from a foreign countrys government to enter the country.
The visa is placed inside of your passport as proof of permission to enter the country.
The visa will indicate how long you can visit a particular country as determined by that countrys government.
The most common visa types are tourist, student, work, and transit visas.
Depending on where you are traveling, a visa can be valid for a single or multiple visits.
Some visas require an application to be filed prior to entering the country and other visas are granted upon entering the country.
Your country of citizenship determines whether or not you need a visa to enter a particular country.
Certain countries require an interview or medical screening prior to applying for a visa.