One of the most beautiful drives in the National Park System is along the Tioga Road that runs across the high country of Yosemite National Park. But can that drive be improved? Yosemite officials are working on a study to determine how, and will visit sections of the road next weekend. And you're invited.

Railroad buffs are about the most dedicated bunch you can find, flocking to model train shows and to rail yard sidings to glimpse historic engines and rolling stock. Now, thanks to National Park Service efforts, they have a new destination: The East Troy Electric Railroad in Wisconsin where five historic South Shore Railroad Cars have been put back in action.

Worries that it might get more expensive to climb Mount McKinley in Denali National Park or Mount Rainier in its namesake park have prompted three climbing groups to ask National Park Service Director Jon Jarvis to stave off any increases.

Still standing centuries after they were built, the ruins at Chaco Culture National Historical Park in northern New Mexico have weathered centuries of storms, winds, and tortuous sun. More recent structures have struggled to stand such a test of time.