The National Park Service's final fee-free days of 2017 are coming up this weekend, in honor of Veterans Day.

Saturday and Sunday, November 11 and 12, all Park Service sites that charge admission fees will waive them. That includes Grand Canyon National Park, which currently charges $30 (per vehicle) for a seven-day pass, so visiting this weekend could be a prudent financial move. (As we told you recently, the Park Service is considering increasing entrance fees at Grand Canyon and other parks during peak season. That proposal would not affect the fee-free days, though.)

The waiver applies only to entrance fees, commercial tour fees and transportation entrance fees. Campsite, concession and other fees will still apply.

Even if you can't make it to a national park this weekend, keep in mind that the vast majority of Park Service sites charge no entrance fee at all. And there are 22 such sites in Arizona that are open to the public. To find a park near you, click here.

The Park Service has not yet announced its fee-free days for 2018, but the first one is likely to be Martin Luther King Jr. Day (Monday, January 15).