There's certainly plenty of places to do that here. Lots of places to look at fossils in museums and displays as well. My grandpa did lots of rockhounding many years ago, there's so many great places to do that in Oregon. You might check out Gem Trails of Oregon for some maps and hot spots.
gem trails of oregon
https://www.amazon.com/Gem-Trails-Oregon-Garret-Romaine/dp/1889786446
washington has one too.
is a good way to find rocks yourself
this and rock shows once or twice a year for a major one and more often for clubs
to see what is out there go to the rice museum: https://imgur.com/a/clCJQ https://imgur.com/a/Iniaw