To enter the country of Nicaragua you need a passport valid for at least six months. You do not need to obtain a visa prior to your departure. You will be able to buy a tourist visa after your arrival at the airport for five US Dollars valid for ninety days for American citizens and thirty days for nationals of other countries. This visa is renewable twice in the country. If you plan to stay in the country as a resident we will be happy to inform you about other documents you will need.