Save 4%: Downtown Portland Walking Tour by Viator Save 4%: Downtown Portland Walking Tour by Viator – Save 4%: Downtown Portland Walking Tour. Deal Start Date: 10/22/2013 Deal Expires: 12/31/2014 Last Updated: Tue, 22 Oct 2013 17:46:32 GMT Keywords: Portland Walking Tour Other Deals Like Save 4%: Downtown Portland Walking Tour by Viator: