I've been to three on that list too and I feel very privileged to have been able to travel and see these places with my own eyes. My parents never had the opportunity.
Even more wonderful is that I have seen a lot of the others indirectly via documentaries on TV so there is really nowhere on this planet we can't explore secondhand from our own armchairs.
We are a very fortunate generation.
Well spotted Dookey, that used to pop up on trivia nights occasionally. The poor li'l 'Royal' wouldn't hope to rate in the top 10, or 100, but I'm old enough to remember when it was the great day trip adventure.
I'm feeling a bit deprived, only been to 2 of those, but plenty that aren't on the list. I'm no zealous environmentalist but am thankful that the people 'back then' were, and preserved those places worth keeping.
Regret not 'doing' the Grand Canyon jaunt but I'm scared of heights.
I'm always reminded of the joke about the Aussie bragging about Ayer's Rock to American tourists. "Bet you haven't got anything like that over there." One piped up with "Nope, guess not, but we sure got a hole you could hide it in."
As Warri mentioned, I doubt there are any on the list that we haven't seen on documentaries so we can at least feel as though we've been there.