Siletz Bay is at the southern tip of Lincoln City, and Lincoln City is about 2-3 hours from Portland, Oregon. Take highway 26 west from Portland, then south on highway 101.
I had to do very little to this image -- a very slight tweak to the contrast, and removing the lights from a couple of buildings to the right.
This view of the quiet bay was from Oregon highway 101, the coastal highway. I pulled off the road real fast to capture the fading light.