Pilot Francisco Ferreira has visited (landed in) a total of 149 countries but have 91 countries yet to explore.
Antarctica
Bahamas, The
Bahrain
Belize
Botswana
British Indian Ocean Territory
Brunei
Burkina Faso
Burundi
Cameroon
Central African Republic
Christmas Island
Comoros
Congo
Congo (DRC)
Cook Islands
Dominica
Equatorial Guinea
Eritrea
Eswatini
Falkland Islands
Gabon
Gambia
Guam
Haiti
Hong Kong
Iceland
Iraq
Isle Of Man
Jersey
Johnston Atoll
Jordan
Kiribati
Korea
Kosovo
Lebanon
Lesotho
Liberia
Libya
Libyan Arab Jamahiriya
Luxembourg
Malawi
Mali
Marshall Islands
Martinique
Mayotte
Micronesia
Midway Islands
Monaco
Montserrat
Morocco
Mozambique
Namibia
Nauru
Niger
Niue
Norfolk Island
North Korea
Northern Mariana Islands
Palau
Palestine
Puerto Rico
Rwanda
Saint Helena
Saint Kitts and Nevis
Saint Pierre and Miquelon
Samoa
Sao Tome and Principe
Senegal
Seychelles
Slovenia
Somalia
South Africa
South Korea
Suriname
Syria
Timor Leste
Timor-Leste
Togo
Tonga
Tuvalu
Uganda
Ukraine
Vanuatu
Virgin Islands, U.S.
Wake Island
Wallis and Futuna
Western Sahara
Yemen
Zambia
Zimbabwe