Visa Free You only need a pasport to enter the country for the set amount of days.

ETA Electronic Travel Authorization: You need to fill out an online form (no cost) before traveling to the country, once entering the country you only need a passport and can stay for the set amount of days.

E-Visa You need to apply for a visa online before entering the country.

Visa on Arrival You need to apply for a visa upon entering the country.

Visa Required Permission from a foreign authority to enter a country is required prior to travel. Contact your consulate or embassy on how to apply for this visa.