YELLOWSTONE NATIONAL PARK, Wyo. (AP) — Entrance fees are being waived at Yellowstone and Grand Teton national parks this weekend to celebrate Presidents Day.

The National Park Service says more than 400 parks across the country will be offering free visitor admission and will be waiving commercial tour entrance fees and transportation entrance fees.

Free entry will be offered from Saturday through Monday.

Other fees such as reservation, camping, tours, concession and fees collected by third parties are not included.