The pictures are taken from Madrona Park in Seattle. You can shoot this picture from any spot on the shoreline of the park. Immediately after you pass this park on your left on Lake Washington Blvd there is a parking lot. I usually like to go there...there are less people and it is easy to find parking.
Directions to Madrona Park
The best time for this shot is 15-30 mnts before sunset in summer. So theoretically you could shoot this shot and hustle over to the west side to shoot another sunset...in practice I've never been able to do this :)