Bulgaria, Hungary and Poland
After my trip through Asia in 1999, I joined a group of fellow RSI graduates on a trip through parts of Eastern Europe.
We had 4 days in Bulgaria, 4 days in Hungary, and were scheduled to have 4 days in Poland. Unfortunately, I was still travelled out from my trip to China, and I was growing increasingly anxious about missing the first few days of medical school, so I ended up bailing on the Poland portion of the trip.
It was a lovely time in Bulgaria and Hungary, with a focus on math and science appropriate for a RSI-sponsored trip.