Teach your toddler about the baby animals living at the Arboretum. Connect babies with their parents, see how they grow while playing games, singing songs, and looking for different animal homes. April 25 and May 5.

See gardens, woodlands, wetlands and prairies in a tram tour. 60-minute and 30-minute tours explain the rich Arboretum history, and describe the trees and plants you'll see. There's also an opportunity to see lovely wildlife in a native habitat.

Interactive story time and fun crafts indoors before heading out on the grounds for a winter walk. Themes change each week. Wednesdays and Fridays.

The new Railway Garden, a G-gauge model railway running through a 2.5 acre site, opens April 30. Visitors enter through a 1920s-era railway depot to see trains running through a garden of miniature plants, water features and a variety of landscapes. May 1 through October.

Velo Theatre presents this performance from May 2-9. Laden with letters and packages to deliver, a postman sets out on his bicycle. Opening one of the packages, he discovers a fantastic and magical world inside. Purchase tickets at (312) 494-9509 or chicagohumanities.org.

Children can immerse themselves in backstage preparation, perform routines in center ring or manage the behind-the-scenes action of lights and sound. Plus, try making a circus balance toy or dress up like a clown.

View an array of student poster projects exploring ways to reduce, reuse and recycle and learn how to become a greener citizen. Runs April 3-May 6.

A special exhibit on the history of Girl Scouting, with special focus on Oak Park, River Forest, and Forest Park. Celebrate the 100th anniversary of the founding of the Girl Scouts of the USA.

Exhibit tells the story of Girl Scouting and Boy Scouting in America.

A visually explosive journey of discovery that weighs the solutions aimed at restoring our planet's orbits. Visitors experience mind-boggling collisions in time lapse sequences captured with the magical imagery of 3D.