Panelists exchanged comments, which were kept anonymous to maintain survey neutrality, during the rating process. These excerpts offer a glimpse of panelists' varied points of view and the reasoning behind each score. They are not the views of the National Geographic Society.

Grand Canyon, USA
Score: 65

"Flights over canyon a problem, as are ecological effects of Glen Canyon Dam upstream."

"The North Rim is far more peaceful. Good management of heavy South Rim visitation makes for an enjoyable experience but not a solitary, meditative one."