10 days you can get into national parks for free

For ten days this year, entrance fees at national parks will be waived.

The first free day is Jan. 16, Martin Luther King Day.

The free days are in place to celebrate the National Park Service's 100th anniversary.

There are 14 national parks in Texas alone.

The other dates:

February 20: Presidents' Day

April 15-16 and 22-23: Weekends of National Park Week

August 25: National Park Service Birthday

September 30: National Public Lands Day

November 11-12: Veterans Day Weekend