BOO! Seattle

We’re throwing a Halloween party, and you’re invited! Discover BOO Halloween, the largest Halloween gathering in the PNW. Who knows what haunts await you inside these hallowed halls?

A zany cast of spooky characters prowls the WaMu Theater, awakened from their slumber by your arrival.

Music from the underground on 3 different stages is sure to give you the spooks.

Indoor festival rides around the venue will make you feel like a kid again.

Join the haunt and treat yourself to a lively Halloween weekend.