Boasting the title of the worlds largest event advocating for the decriminalization of marijuana, Seattle HEMPFEST peacefully takes a stance on this controversial argument. Since its inception in 1991, the festival has grown to draw a crowd of more than 450, 000 devoted attendees. Held as a three-day event, guests can join in a political rally, attend the arts and crafts fair and enjoy a heady lineup of live musical entertainment. More Info below.