I asked about group tours for a day trip to Plitvice in this forum. No replies. Apparently my instincts were correct, tour agencies only offer private tours there. So, does the same hold true for Samobor, Trakoscan and Varazdin castles? I have not been able find any group tours for these day trips. We are experienced travellers and prefer not to take a private tour, we are looking for small group tours. Does this even exist in Zagreb? So far, this is the only country that I have ever visited where I am having difficulty finding group tours. Any suggestions are appreciated.