Negotiating Cades Cove in Great Smoky Mountains National Park without cars? Yes, you'll be able to do that beginning June 17 and every Wednesday thereafter through September 30 as part of a pilot program to improve your experience in the park.

If you were lucky enough to land a reservation to enter Rocky Mountain National Park in Colorado, you'll be able to drive Trail Ridge Road, barring any late season snowstorms of course.

One of the most incredible birding spots in the National Park System is Glacier Bay National Park and Preserve in Alaska. Cruise up the bay and enter its side bays and you'll be astonished by the many species of seabirds. For the rest of the summer, the park staff has instituted some restrictions so you don't disturb them during nesting season.

Most national park lodges operated by Xanterra Travel Collection are scheduled to reopen by June 15, with one at Grand Canyon National Park reopening Friday.