When it comes to tours, Seattle [1] has every possible option, from the standard drive-’em-around-in-the-bus type to the goofy, tongue-planted-firmly-in-cheek version.
Links:
[1] http://www.moon.com/destinations/washington/seattle
[2] http://www.moon.com/destinations/washington/seattle/sights/tours/flightseeing-tours
[3] http://www.moon.com/destinations/washington/seattle/sights/tours/bus-and-van-tours
[4] http://www.moon.com/destinations/washington/seattle/sights/tours/argosy-cruises
[5] http://www.moon.com/destinations/washington/seattle/sights/tours/boat-tours
[6] http://www.moon.com/destinations/washington/seattle/sights/tours/walking-and-biking-tours