Looking for some trip ideas for 2017? The U.S. National Park Service has announced its free admission days for 2017, and there are still six days left in the year to explore some of the nation’s most inspiring landscapes.

You can visit the parks for free on:

·         Saturday and Sunday, April 15-16 and 22-23: Weekends of National Park Week

·         Friday, August 25: National Park Service Birthday

·         Saturday, September 30: National Public Lands Day

·         Saturday and Sunday, November 11-12: Veterans Day Weekend

Check TravelandLeisure.com for a list of the 137 national parks, monuments and recreation areas that will be waiving entrance fees.

For even more trip inspiration, check out the list AIANTA and the National Park Service put together featuring a number of park-tribal collaborations that debuted last year. You’ll find more about locations offering tribes new opportunities for cultural expression and giving park visitors new perspectives on history, community and the land.