All of our 3 kids (early 20s) have been to France, Spain, Italy, Ireland, Croatia, Gibraltar, Montenegro, Canada, Guatemala and Honduras and the Dominican Republic and Morocco. (Did all those as a family so dh and I have also been there).
Dd1 has also been to Belgium and Portugal.
Ds has also been to Belgium, Switzerland, Romania and Australia!
Dd2 has also been to Poland.
They're fairly well travelled we think
Dh has also been to India, Nepal, Zimbabwe, Denmark, Norway, Germany (including going to East Germany as a teenager), Austria, Bolivia, USA and Venezuela.
I've also been to Iceland, Belgium, Netherlands, Luxembourg, Germany, Austria, Andorra, Sweden, Norway, Nicaragua and Venezuela.