Grand Canyon & Grand Teton National Parks Preserved on this day in 1919 & 1929, respectively! Just one pic below of each - Susan & I have been only to the Grand Canyon x2, first time included a helicopter ride starting on the south mesa and then flying over the canyon - exciting and memorable. We've not been there since the Skywalk was built - would also be exciting. AND, we would love to visit many of the National Parks out west that we missed in our many early travels. Dave .