A long and ridiculous drive in the Oregon coast range (north of Albany/Corvallis) gets you to the ghost town of Valsetz, once a logging community and the wettest town in the continental US. There's a grove of very old-growth trees there,
https://en.wikipedia.org/wiki/Valley_of_the_Giants_(Oregon)I got there too late and it started getting dark so I couldn't find it. Underestimated how long the circuitous drive would be. Cool place hidden deep in the forest