To get a university degree we are required to study a major subject and then two or three secondary subjects (and then some obligatory language courses for everybody). And we are mostly free to choose any secondary subjects we like, even from a different University. Of course we didn't study those secondary subjects as much as the main one. My secondary subjects were psychology, educational sciences and folkloristics.

Ah, and at university one of my mates did an exchange year in Korea =)