Despite the ending of the movie taking place in Seattle for some reason the production filmed and used an establishing shot of Philadelphia from the vantage point of the South Street Bridge. Several key identifiable landmarks are visible in this shot and there is obviously nothing resembling a Space Needle to even vaguely pass it off as the intended location. Why they did this exactly has never been revealed.
Almost all of the scenes that are depicted in the "city" are filmed within a two block area in downtown Wenatchee, Washington. The area filmed was in a two block perimeter of Mission, Orondo, Palouse and Columbia streets with the majority of the film scenes in the alley way behind the Liberty Theater off of Mission St. This area also includes the infamous Bruce Hotel which is still there today; however it has not been a hotel since the early 2000 and is now Bruce Transitional Housing for the homeless.
After Mason jumps in the river and swims downstream, he discovers his cigarettes are still dry. This despite the fact he was completely submerged and his clothing was drenched.
Near the end of the movie it states that it is "Three Days later in Seattle" and the skyline that is shown is clearly that of Philadelphia. Skyscrapers Liberty Place One and Two in Center City are shown.
After dinner, Doc Hawkins offers Mason a full pack of cigarettes with a few of the cigarettes sticking out of the top of the packet holding the lid open by placing it on the table. In the next shot when Doc Hawkins pushes the packet closer to Mason the packet is half empty with no cigarettes sticking out .
Burns: Life's true pleasures are so unpredictable. I'd say cherish the moment for it is. Observe your food, smell it, touch it, put your mind into it, and you're finally ready, consume it slowly.
Jack Mason: [Burns, wanting to test Mason's endurance, offers him twenty dollars to run twenty minutes on a treadmill]
For twenty dollars I'll run to fucking Alaska!