Pilot Davy Wittebols has visited (landed in) a total of 102 countries but have 138 countries yet to explore.
Afghanistan
Albania
American Samoa
Angola
Anguilla
Antarctica
Antigua and Barbuda
Armenia
Aruba
Bahrain
Bangladesh
Belarus
Belize
Bermuda
Bolivia
Bosnia and Herzegovina
Botswana
British Indian Ocean Territory
Brunei
Bulgaria
Burkina Faso
Cambodia
Cameroon
Cayman Islands
Christmas Island
Cocos (Keeling) Islands
Comoros
Congo
Cook Islands
Costa Rica
Cote D'Ivoire
Dominica
Dominican Republic
Egypt
El Salvador
Equatorial Guinea
Eritrea
Eswatini
Falkland Islands
Faroe Islands
French Guiana
Gabon
Gambia
Georgia
Greenland
Grenada
Guinea
Guinea-Bissau
Guyana
Iraq
Israel
Jamaica
Jersey
Johnston Atoll
Jordan
Kazakhstan
Kiribati
Korea
Kosovo
Kuwait
Kyrgyzstan
Liberia
Libya
Libyan Arab Jamahiriya
Lithuania
Luxembourg
Macau
Marshall Islands
Mauritania
Mauritius
Micronesia
Midway Islands
Montserrat
Morocco
Mozambique
Myanmar
Nauru
New Caledonia
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Oman
Palau
Palestine
Panama
Paraguay
Qatar
Reunion
Saint Helena
Saint Kitts and Nevis
Saint Pierre and Miquelon
Saint Vincent and The Grenadines
Samoa
Sao Tome and Principe
Senegal
Serbia
Seychelles
Sierra Leone
Singapore
Solomon Islands
Somalia
South Korea
Suriname
Syria
Tanzania
Timor Leste
Timor-Leste
Togo
Turkmenistan
Turks and Caicos Islands
Tuvalu
Uruguay
Uzbekistan
Venezuela
Vietnam
Virgin Islands, U.S.
Wake Island
Wallis and Futuna
Yemen