Our trip was actually in June 2009 but I can't select a date earlier than 2010.
We rented a car and visited three fortified churches; of the seven UNESCO -designated fortified churches, Prejmer was the only one we saw. The fortification at Prejmer is really interesting and the staff gave us additional information and suggested we walk the wall perimeter inside - between the outer wall and inner wall. We didn't even notice we could until we were told! It was definitely worth a visit. Try to look in all the open doors and go up and down the staircases to see the most of it.
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