I visited Hillsborough which looks like a nice small town. On approaching the entrance gates (which incidentally started their lives in Armagh) I was advised (in the nicest possible manner) that i could not get in. According to the Historic Palaces brochure it should have been open to the public. Dissapointment!
Very nice guided tour. Imagine the royalty and politicians who stayed and walked these paths. Hillsborough is a lovely town to visit for history and walks and food.