KEY VISA REQUIREMENTS FOR TRAVEL TO GHANA

1. All visitors to Ghana must have a valid passport or legal travel document. 
2. All visitors entering Ghana must have a valid entry visa, except for citizens of certain countries that have specific bilateral agreements with Ghana (such as ECOWAS nationals). 
3. Proof of yellow fever vaccination is required for anyone over 9 months of age upon arrival in Ghana. 
4. Foreign nationals over 6 years old who have been physically present in Ghana for at least 90 days cumulatively will be issued a non-citizen Ghana card by the National Identification Authority (NIA). This card is required for various transactions in Ghana. 
5. For tourism or business visits less than 30 days, U.S. citizens can obtain a visa upon arrival in Ghana. For longer stays or other purposes, a visa must be obtained in advance from the Embassy of Ghana. 
6. Visa applicants may need to provide additional documentation such as a letter of invitation, roundtrip ticket, and proof of sufficient funds, depending on the purpose of travel.
7. There are two types of visas - single entry valid for 3 months, and multiple entry valid for longer durations at the discretion of the consular officer.

In summary, a valid visa is required for most travelers to Ghana, with specific requirements depending on the purpose and duration of the visit. Proof of yellow fever vaccination and obtaining a non-citizen Ghana card may also be necessary.