Henry Mansfield Halloween Party is a costume party at Hidden Hall in Seattle, WA, on Wednesday, October 28 from 7 PM to 9 PM. That's 3 days before Halloween. Costumes are part of the fun. Within three days of it, 44 more Halloween events happen around Seattle.
Wednesday, October 28 · 7 PM – 9 PM
UTC-07:00Hidden Hall | Seattle, WA
Hidden Hall, 400 N 35th St, Seattle, United States
Ticket Network Events
It is on Wednesday, October 28, 2026, from 7 PM to 9 PM, 3 days before Halloween.
It takes place at Hidden Hall, 400 N 35th St, Seattle, United States.
Yes, costumes are encouraged.
It runs for about 2 hours, from 7 PM to 9 PM.
Baba Yaga
The National Nordic Museum
Wamu Theater At Lumen Field Event Center
325 5th Ave N, Seattle, WA, United States, Washington 98109
Rhein Haus Seattle
Trinity
WaMu Theater - Seattle
The Pine Box
W Seattle
Ora Nightclub
Lonely Siren
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