The Best Things To Do Around The Main Line with Kids
Discover the best family-friendly things to do in and around the Main Line with kids, including events, festivals, attractions, and free activities through our curated calendar. Find what’s happening in Chester, Delaware, and Montgomery Counties today and plan your next family adventure!
💞 Check out our sister Community Calendars too: Philadelphia Family and Bucks County Parent.
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Main Line Parent Community Calendar
Astronomy Day 2026
Celebrate International Astronomy Day at The Franklin Institute. Spend the day unlocking the mysteries of the universe across four floors of out-of-this-world experiences, including the two-story Wondrous Space exhibit, Fels Planetarium, and the Holt & Miller Observatory.
Featured Programming:
Solar Viewing in Science Park: Safely view the sun with telescopes and custom solar-viewing tents.
Space Suit Show: Do you have what it takes to visit space, or at least dress the part? Learn the ins and outs of a space suit to prepare you for your future travels.
Explosive Trash Can Rocket Launch Finale: See science performers launch a 40-gallon trash can into the sky using our favorite ingredient, liquid nitrogen.
Special Guest: Chief Astronomer Derrick Pitts.
