What is your child interested in? Are you looking for an academic camp or just something that will expand their horizons? My DS has always wanted a break from academics over the summer and thus we have had good luck with a variety of things. From music camp, robotics camps, to wilderness outdoor camps. I've only enrolled him in camp for gifted once, it was local and he enjoyed it. At that he had fun learning chemistry and physicals at the local university.

Good Luck