All visitors except citizens of the 16 countries that make up the West African political union must possess a valid entry visa on arrival in Nigeria. Nigerian visas are not usually issued at the point of entry. The following are the requirements for obtaining a Nigerian visa: • A valid passport (at least 6 months to expiration). • Three recent passport photographs • A copy of round-trip ticket • A letter of invitation accepting immigration responsibility or evidence of financial support while in Nigeria from individual Nigerians or Nigerian organizations (The conference Organiser will be able to provide you with this once you are registered for the conference).