Visas are obtained from the proper embassy or local the consulates of the country to be visited. There are over 270 countries that offer visas and literally thousands of different types of visas available based upon country, type of visit, and length of visit. A passport is an official government document that certifies one's identity and citizenship. A visa is an official government document that temporarily authorizes you to be in the country you are visiting.
Many countries require a visa to gain entry.
Unfortunately, the answer to this question is subject to change almost on a daily basis. If you are a U.S. Citizen, visit our visa database to view entry requirements. Reason for visit. Length of visit. Country which issued your Passport.