If you are a U.S. citizen planning to travel outside the U.S., you may need a visa to enter a foreign country. Learn how to find your destination's visa requirements. While not all countries require visas for American travelers, many do. Look up your destination using the U.S. State Department's Learn About Your Destination search tool. On the country’s information page, you will find entry, exit, and visa requirements. You will also find travel advisories and a link to the country’s embassy.