For Cole's birthday, we stayed at a condo right on Yaquina Bay.  It was wonderful to wake up to the beautiful view of the bay, and the kids loved staying right on the marina and seeing all the boats docked.  After spending the morning there, we moved on to Yaquina Bay State Park.  Unfortunately, the lighthouse was closed, but the kids had a great time on the beach and running down the dunes and crashing into the sand.  They could have stayed there all day!