Most visitors to Ecuador can enter the country without a visa. However, some visitors of certain countries must first obtain a visa in advance before being allowed to enter the country. Visitors may stay up to 90 days, except citizens of Peru, who are allowed a maximum stay of 180 days, and citizens of China who are allowed to stay for 90 days per calendar year. All visitors must hold a passport valid for 6 months, except for citizens of Argentina, Bolivia, Brazil, Chile, Colombia, Paraguay, Peru and Uruguay. Citizens of those countries can also enter Ecuador with ID card.