On four days in 2021, all 75 Minnesota state parks and state recreation areas will offer free admission to everyone. Mark your calendar for these fee-free dates:

Saturday, February 13
Saturday, April 24
Saturday, June 12
Friday, November 26

Minnesota state parks are open year-round, and there's a state park within 30 miles of most Minnesotans. With a free day in each season, it's a great opportunity to get out there and explore someplace new - or visit an old favorite at a new time of year! Whether you stay for the whole weekend or just spend a few hours outside, you'll make memories that will last a lifetime.
The entrance fee waiver for fee-free days does not cover amenity or user fees for activities like camping, rentals, or special tours.

https://www.dnr.state.mn.us/state_pa...ate-parks.html