My parents have been to 52 countries. Here is the list:

Argentina 1973, 1998
Australia 1989, 1997, 2014
Austria 1963,
Bahrain 1979
Bolivia 1973 Landed at worlds highest airport La Paz
Brazil 1972, 1973, 1997 (lived here)
Canada 1962, 1966, 2017
Chile 1973, 1998, 2012
China 1978, 1996
Dominican Republic
Egypt 1959, 1965, 1999
Estonia
Finland
France
Germany
Greece
Iceland
India (lived here)
Iran (lived here)
Ireland
Israel
Italy
Japan
Kenya
Malaysia
Malta
Mexico (lived here)
Monaco
Morocco
Nepal
New Zealand
Norway
Oman
Pakistan
Russia
Singapore
South Africa
Spain
Sweden
Switzerland
Thailand
United Kingdom
United States 1959-1963, 1965-1972, 1973-1977, 1979 to present (lives here)
Venezuela 1972 at Caracas airport on way to Brazil
Yemen 1959, 1965
Zambia
Zimbabwe
Bahamas
The Netherlands a.k.a Holland
Panama
Nicaragua
Costa Rica

They have also been to 3 other places that are not UN member states:
Hong Kong
Falkland Islands
Tahiti

For further reading on the subject, pick up a copy of “Such a Wonderful Journey” by Hoshi Aga. It is available on Amazon.com