We are lucky to have some of the nation's most beautiful scenery here in the Big Sky. We've got Yellowstone right here, but there are 399 other National Parks you may not have explored yet. To make it easy, the National Park Service offers lots of free ideas for making the most of a trip to our national parks. Their latest guide, Road Trippin', covers 15 great travel ideas for taking a long weekend road trip.

Here are 11 guides you can download for free to help plan your next adventure, thanks to the National Park Service:

It's interesting but true, each of us is part-owner of our national parks. Check out the National Park Owner's Guide for maps, travel tips and inside information on what not to miss at the nation's over 400 national parks.

Road Trippin' features 15 different long-weekend getaway ideas that combine well-known national parks with some lesser-known sites.

Enjoy the health benefits of spending time in the great outdoors. Recharge in the Parks offers tips on how to recharge your mind, body, and spirit.

Surprisingly, there are still places in the wilderness the general public doesn't really know about (just ask Bigfoot). The Places Nobody Knows is a guide to hidden gems within the national park system.

In a quest to find the perfect lodging or campground, Gimme Shelter will help you find places to stay on your adventure, whether it's roughing it, or "glamping."

Happy Trails has a list of 25 Unforgettable National Park Hikes with descriptions, insider recommendations for all ages and ability levels, and general hiking tips.

There are so many opportunities to learn at our National Parks. Parks For Play helps connect you to 35 great national parks to be enjoyed specifically by kids (of all ages) and families.

Did you know that the Northern Pacific Railroad was instrumental in having Yellowstone designated as a national park in 1872? The railroads are a great way to explore national parks. National Parks by Rail has travel tips, maps, and more to help you enjoy seeing the nation from a train window.

If you're looking for a romantic adventure, how about a fun date, a quiet getaway for two, or even exchanging your vows? I Heart Parks helps you find the most romantic parks to enjoy with the one you love.

For day trips, Urban Playgrounds has a list of parks that are close to 24 major U.S. metropolitan areas.

For cross-country skiing and snowshoeing, ice fishing, stargazing, sledding, and more, Winter Wonderlands will lead you to winter activities in 15 national parks.

Remember, we all own the National Parks, so get out and enjoy them!

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