I’m from Washington state, and if anyone goes there, they visit Seattle and the Space Needle, Experience Music Project Chihuly glass museum, and Pike Place Market. For outdoor activities, they may go whale watching, visit the warf/sound, and maybe take a ferry to one if the islands to hike.

All of those places get really crowded in the summer, and locals largely don’t go. I’ve been to each of those places once (never actually gone up the Space Needle though).

There are a ton of other cool things to see and do there that aren’t nearly as crowded.