Croatian here. I've been to Slovenia, Bosnia and Herzegovina, Italy, Austria, Czech Republic, France, Spain, United Kingdom.
No, I am not rich, we traveled a lot with our high school. Most of the trips were a day or two. I am not sure if I've stayed in France, I definitely went through it. lol
Longest trips were 2 weeks of studying English and much more in London (best trip), and a week long school trip to Spain. UK&London <3