For $25, you can drive into Yellowstone or Yosemite national parks, your car loaded with family, and spend the rest of the week exploring. At Mesa Verde National Park, after paying the park's $15 entrance fee, another $25 fee will get you -- only you, not your entire family -- on a two-hour hike to either Mug House or Square Tower House.

To help mark National Get Outdoors Day, all units of the National Park System will be free to enter this Saturday.

Welcome to a few of many improvements we have in store for you on Traveler. From a new Nav Bar with fast Drop Down access to our content, to our first-ever magazine ready to download, easier social network sharing, and even global park features—here are a few updates that'll make your time on The Traveler more fun and informative.

You can attempt a rim-to-rim hike at Grand Canyon National Park now that a detour around a washed-out section of the North Kaibab Trail has been provided, but park officials caution that it's pretty narrow and "hazardous conditions exist."