The Science History Institute joins the Delaware River Festival for its 5th annual celebration of the mighty Delaware.

This annual event brings people together for a day of family-friendly fun, educational activities, and water-centered learning to the Camden and Philadelphia waterfronts. The Delaware River Festival offers something for the whole family: free ferry rides, museum visits, pedal boats, face painting, a scavenger hunt, crafts, and so much more!

Learn about the history of synthetic dyes and their impact on our environment with Science History Institute staff. View images from our upcoming exhibit BOLD: Color from Test Tube to Textile and make your own River Hero Badge with fabric and paint!

This event is free and open to the public, and no tickets are required.

More events

Science History Institute Othmer Library
July 1, 2026
Free

Othmer Library Tour

Curious about the other half of the Science History Institute? Step into the Othmer Library of Chemical History!

Logo for Red, White, & Blue To-Do July 2, Philadelphia Historic District, on dark blue background
July 2, 2026
For Families

Red, White, & Blue To-Do

The Science History Institute is one of 23 museums, historic sites, and local businesses in Philadelphia’s Historic District coming together for a day of star-spangled festivities in the nation’s most historic square mile.

rainbow overlaid photo of people enjoying fireworks, "Celebrating ACS 150" logo in upper left corner
July 2, 2026
Free

American Chemical Society Webinar: Flash! Bang! Boom!

Join curator Jesse Smith for a special presentation exploring how fireworks have illuminated humanity’s biggest moments across time and around the globe.

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