2026 Summer Celebration Photo Slideshow

What an incredible turnout for this year’s Summer Celebration! Please view the slideshow for pictures from a wonderful day filled with community spirit, from the classic parade and live music to the delicious food and spectacular fireworks.
A massive THANK YOU to everyone who attended, and to the amazing partners who made it all possible:
Our Sponsors: Mercer Island Community Fund, Mercer Island Martial Arts, The Mercer Apartments, Vineyard Park, John L. Scott, BECU, Mercer Island School District, and Friends of the Mercer Island Library.
Parade: 30 entries (over 520 participants!), plus our fantastic City staff, municipal vehicles, and Eastside Fire and Rescue.
Vendors and Organizations: 20 local art vendor booths and 38 non-profit/community groups.













