Bostonians really know how to celebrate the arrival of Spring and sunshine! With the Boston Marathon completed, Earth Day celebrations around the city, and the Big Apple Circus in town, might as well join the masses, get outside, and savor this last weekend of April Vacation with the kids. Here are some unique family-friendly activities happening this weekend at a few of the sites listed in Boston Baby: A Field Guide for Urban Parents:

Junior Ranger Day on the Boston Harbor Islands

On Saturday April 24 at 11AM (reservations recommended), the National Park Service, Boston Harbor Island Alliance, and the Mass DCR are offering a reduced rate for families to head out to Georges Island for the day. Don’t miss this exciting opportunity for your kids to earn their Junior Ranger badges and learn more about protecting and appreciating our heritage. Plus, families can bring their own picnics and participate in the many activities planned for all ages. (And parents, you can also learn more about the islands in Christopher Klein’s Discovering the Boston Harbor Islands, just in time for summer!)

Baby Animals on Shaker Farm at the Hancock Shaker Village

Baby animals!? Need we say more? Take a daytrip to the Hancock Shaker Village in Hancock MA to join in the festivities at the 8th Annual Barnyard Birthday Party. Parents can take in the spectacular sights of new growth in the gardens, while the little ones get to help out and play with Shaker Farm’s baby lambs, piglets, calves, and chicks!

International Children’s Film Festival at the ICA

If you’d rather stay a little closer to the city, as well as mix indoor and outdoor activities, go down to the Institute of Contemporary Art on Saturday at the Seaport. For fresh air, stroll along the Harborwalk and stop for a picnic with an unbeatable view of the waterfront. Stop by the ICA from 10AM-4PM for the International Children’s Film Festival. Families can watch short films made by children, join in on a drawing and animation workshop, create storyboard collages, as well as meet artist and filmmaker Jim Capobianco who will talk about his film, Leonardo.