That is beautiful. I had never heard of dragon fruit so I looked it up and saw it tastes like a cross between kiwi and pear. If this is accurate, I would love it. Those are 2 of my favorite fruits.
Unfortunately I have not had the opportunity to try many exotic fruits. I will never forget the first time I saw, and ate a kiwi. It was exciting. I love mangos, and a few others that were mentioned.
As Saria said, persimmons and kumquats are not exotic but they are harder for me to find now. Persimmon trees are native to NC and were everywhere when I was little. Kumquats adapted well in my area, but you can no longer find either in the woods.