Saturday (4/17) is the beginning of National Park Week. Admission to all national parks is free -- that doesn't affect much in the DC metro area, but it will save you a chunk of change if you decide to head out to Shenandoah National Park.
Rock Creek Park will be celebrating with a Junior Ranger day on Saturday (4/17) from 11 to 4, with activities for kids throughout the day at Peirce Mill. And Greenbelt Park will hold a Junior Ranger Day on Sunday (4/18) from 9 to noon.
As always, there are lots more events on our calendar, including a walk we're leading on Saturday to look for morels and wildflowers (register here). We'll see you out there!