Note that there are three ways that countries issue visas: 1) at the point of entry (visa on arrival), 2) online, and 3) through the embassy or consulate of the country you are traveling to. If point of entry or online visas aren’t an option, you may need to mail your visa application, passport, and a fee to the country’s embassy in the U.S. The application process can take several weeks so get an early start. Note that if you’re pressed for time, there are companies such as CIBT or G3 Global Services that use couriers to expedite the process of obtaining visas.