A travel visa is an authorization that permits a traveller to visit one certain country, usually in the form of a sticker document affixed to a passport page or a stamp also placed in one of the passport pages.
Each country has its own visa policy. To get a travel visa you must apply at the office of the immigration authorities of the country you are planning to visit.
In cases when your destination country does not have a consulate or embassy in your home country, you will have to obtain a travel visa at the embassy of another country that is authorized to issue visas for the country you will to visit.
Visa Help Service has the most up-to-date business and tourist visa requirements for entry to over 200 countries worldwide. The most popular countries US citizens travel to are listed below. Each country page lists the information you need to get the travel documents necessary for your trip. This includes: