Venue

Open Space

Name: Open Space
Address: 18870 103rd Ave SW, Vashon, WA 98070, USA
Telephone: +1 206-408-7241

18870 103rd Ave SW, Vashon, WA 98070, USA

Gallagher Hill Open Space is an 11-acre natural area in the northeast corner of Mercer Island along Gallagher Hill Road, featuring a stream through a ravine and trails. It serves as a peaceful escape and hosts volunteer restoration events.

Upcoming events

Restoration Event
Saturday, August 15, 2026 · 10:00 AM PDT · Sports & Outdoors
Restoration Event
Saturday, August 15, 2026 · 10:00 AM PDT · Community & Social
Restoration Event
Saturday, August 15, 2026 · 10:00 AM PDT · Sports & Outdoors
Restoration Event | Engstrom Open Space
Saturday, August 15, 2026 · 10:00 AM PDT · Community & Social
Restoration Event
Saturday, August 15, 2026 · 10:00 AM PDT · Sports & Outdoors
Kristina Marinova
Saturday, August 15, 2026 · 7:30 PM PDT · Music
Acrobatic Conundrum: Trust Fall
Wednesday, August 19, 2026 · 7:00 PM PDT · Performing Arts
Blessing Bled Chimanga
Thursday, August 20, 2026 · 7:30 PM PDT · Music
The Wren
Friday, August 28, 2026 · 7:30 PM PDT · Performing Arts
Up Up Up Crane Truck Circus
Wednesday, September 2, 2026 · 7:00 PM PDT · Performing Arts
What the Constitution Means to Me
Thursday, September 10, 2026 · 8:00 PM PDT · Performing Arts
Fall Equinox Sound Bath & Harvest Tea Ceremony
Sunday, September 20, 2026 · 7:00 PM PDT · Community & Social
Kanekoa
Saturday, September 26, 2026 · 7:30 PM PDT · Music
THC:XLR
Saturday, October 17, 2026 · 7:30 PM PDT · Music
Laura Veirs
Friday, October 23, 2026 · 7:30 PM PDT · Music
Burlesco
Saturday, November 7, 2026 · 7:00 PM PST · Performing Arts
Open Air aerial festival
probably around Sunday, August 1, 2027 · Performing Arts

Recently at Open Space

Restoration Event
Wednesday, August 12, 2026 · 12:00 PM PDT · Sports & Outdoors
VTVE Cabaret
Friday, August 7, 2026 · 7:00 PM PDT · Performing Arts
Oscar's Journey: The Fall and Rise of the Bird King
Sunday, August 2, 2026 · 6:00 PM PDT · Performing Arts
Open Air aerial festival
Sunday, August 2, 2026 · Performing Arts
Night at the Grand Opera
Thursday, July 30, 2026 · 7:30 PM PDT · Performing Arts

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