Five months on, these places on our list have had 'no visitors' (if the map is up-to-date!):
- Africa - Benin, Burkina Faso, Burundi, Cameroon, CAR, Chad, Comoros, Djibouti, Equatorial Guinea, Eritrea, Guinea, Guinea-Bissau, Liberia, Libya, Mauritius, Mayotte, Niger, Nigeria, Reunion, São Tomé and Príncipe, Somalia, South Sudan, Western Sahara.
- Asia - British Indian Ocean Territory, Timor-Leste, Turkmenistan.
- Atlantic Islands - French Southern Territories, Tristan Da Cunha, Saint Helena
- Pacific islands - American Samoa, Kiribati, Marshall Islands, Micronesia, Nauru, Niue, Palau, Pitcairn Islands, Tokelau, Tuvalu, Wallis and Futuna.
- North America - Bonaire/Sint Eustatius/Saba, Grenada, Saint Pierre and Miquelon, Saint Vincent and the Grenadines, Trinidad and Tobago.
- South America - Guyana
Country-level visitation is quite a low standard, but even by this crude measure, we have an enormous gap across central Africa. Imagine if we took this down to the county level; I don't even crack the 16% mark for the U.S.
Standouts to me include Nigeria, the largest economy and most populous country in Africa; and Trinidad and Tobago, a major transportation and commercial hub.
Minor surprises: Burundi, recently popular among backpackers as an add-on to Rwanda; and world-traveler-bucket-list topper Tristan da Cunha.