In article ,
says...
Another "Must See" museum in Western Oregon is the Columbia River Maritime
Museum in Astoria -

http://www.crmm.org/

It's been years since I visited that one, an excelent choice.
And if you are in that area head out to Ft Stevens and see the Endicott
era coast defense emplacements.
They are building a replica of one of the guns.

I'll be down that way this next week TDY and will try to swing over and
get some pictures.