https://www.nps.gov/olym/index.htm
https://www.nps.gov/mora/index.htm
https://www.nps.gov/noca/index.htm
https://visitseattle.org/things-to-do/sightseeing/top-25-attractions/
Port Angeles has a ferry that runs regularly and takes you over to Victoria, B.C. Don't forget your passport! https://www.cohoferry.com/schedule-fares
October is a great time for whale watching in the area, as they are migrating and active. https://www.seattlesouthside.com/top-5-whale-watching-adventure-tours-near-seattle/
https://curiocity.com/guide-10-amazing-waterfalls-near-seattle/ https://www.planetware.com/washington/top-rated-waterfalls-in-washington-state-us-wa-160.htm
https://www.globeguide.ca/oregon-waterfalls-near-portland/
https://www.planetware.com/oregon/top-rated-attractions-and-things-to-do-on-the-oregon-coast-us-or-79.htm
https://www.busytourist.com/things-to-do-in-portland-oregon/
https://willamettevalley.org/