To visit Nepal, a valid visa and passport is required. Visas can be obtained from the Embassy of Nepal or after arrival in Nepal at the Tribhuvan International Airport.Both single-entry and two-month, multiple-entry is available at the airport. The expedition provide 60 days tourist visa. Two passport photos and an amount equivalent of US$65 need to be provided for the process. When leaving, all the foreigners need to pay a departure tax at the airport regardless of the duration of the stay.
For further details regarding the visa, visit the Embassy of Nepal website. Information bout the entry and exit in the country can be obtained from the Nepalese Department of Immigration.